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The Dangerous Shore: How a Motley Crew of Scientists, Mobsters, Double Agents, Retirees, Volunteer Pilots (and a Boy Scout) Stopped the Invasion of ... Gripping Untold History of WWII's Home Front
Sara Vladic, New York Times bestselling author of Indianapolis, reveals the gripping, untold history of the United States under attack during World War II and the improbable patriots who stepped up to defend their country in her hour of need.
History books have told us, in the decades following World War II, that Pearl Harbor was the only major attack on the United States’ home front. But this is not the whole truth. In The Dangerous Shore, leading researcher and bestselling author Sara Vladic unveils a much different story, one hidden away in dusty archives and behind press embargoes: Throughout the Second World War, German U-boats presented a very real threat to America’s eastern coastline, destroying ships, landing spies, and planning assaults on cities. With the country’s attention focused on the European and Pacific fronts, the U.S. would have been left undefended, if not for a ragtag bunch of characters who rose to the occasion.
Comprised of misfits, rejects, and outlaws, this motley crew came from unexpected places. Among their ranks was the stalwart Gill Robb Wilson, leader of a barnstorming corp of volunteer civilian pilots; the brilliant Dayton engineer, Joe Desch; and the nearsighted yet "clairvoyant" Kenneth Knowles, commander of the Phantom Fleet, entrusted with ULTRA intelligence.
Meanwhile, the cooperation of Grace Buchanan-Dineen, a self-styled countess and German spy turned double agent, helped the FBI net even more spies. Notorious but all-American mobsters Lucky Luciano, Meyer Lansky, and Socks Lanza struck deals with Naval Intelligence and kept watch over critical ports. Together their efforts turned the tide of war at home and saved thousands of American lives.
A thrilling and eye-opening read, The Dangerous Shore leads you through American history like never before. The story is an ode to the bravery, loyalty, and patriotism of our most unsung—and unlikely—heroes.
History books have told us, in the decades following World War II, that Pearl Harbor was the only major attack on the United States’ home front. But this is not the whole truth. In The Dangerous Shore, leading researcher and bestselling author Sara Vladic unveils a much different story, one hidden away in dusty archives and behind press embargoes: Throughout the Second World War, German U-boats presented a very real threat to America’s eastern coastline, destroying ships, landing spies, and planning assaults on cities. With the country’s attention focused on the European and Pacific fronts, the U.S. would have been left undefended, if not for a ragtag bunch of characters who rose to the occasion.
Comprised of misfits, rejects, and outlaws, this motley crew came from unexpected places. Among their ranks was the stalwart Gill Robb Wilson, leader of a barnstorming corp of volunteer civilian pilots; the brilliant Dayton engineer, Joe Desch; and the nearsighted yet "clairvoyant" Kenneth Knowles, commander of the Phantom Fleet, entrusted with ULTRA intelligence.
Meanwhile, the cooperation of Grace Buchanan-Dineen, a self-styled countess and German spy turned double agent, helped the FBI net even more spies. Notorious but all-American mobsters Lucky Luciano, Meyer Lansky, and Socks Lanza struck deals with Naval Intelligence and kept watch over critical ports. Together their efforts turned the tide of war at home and saved thousands of American lives.
A thrilling and eye-opening read, The Dangerous Shore leads you through American history like never before. The story is an ode to the bravery, loyalty, and patriotism of our most unsung—and unlikely—heroes.
- GenresHistoryNonfictionWar
624 pages, Hardcover
First published March 10, 2026
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Displaying 1 - 12 of 12 reviews
March 11, 2026
A DNF for me at the end of 100 pages, this is far from my favorite non-fiction history. Author Sara Vladik takes a scattershot, sometimes overly dramatic approach to describing some of the espionage that impacted the United States before and during WWII. Comprised of short sections, filled with a plethora of actors, often unconnected, Ms. Vladik's book focuses more on events than on the people and politics involved. Yes, we’re introduced to people like Alan Turing and Vannevar Bush, but we're given very little sense of who they were. And yes, geopolitical issues are touched upon, but they’re not explored in any great depth. There is a lot of material on cryptography, but I found it so technical as to be mind-numbing. Ms. Vladic has certainly done a lot of research, so readers may find some of the facts she presents of interest. But I didn't find anything particularly new or groundbreaking. And often, in her attempts to make things exciting, she takes a “breathtaking” approach to her subject matter that, for me at least, often adversely impacted the work’s credibility. 2.5 stars rounded up to 3 because of the copious research.
December 6, 2025
I just finished reading an incredible, historical non-fiction novel that really opened my eyes to the suppressed realities of America’s crushing losses in the Atlantic, the desperate pursuits to gain ground, and the imminent threats of being attacked on land during World War 2.
Thank you to William Morrow Books & HarperCollins Publishers for the special galley edition publication of this book to read and review.
The Dangerous Shore by Sara Vladic brings to light shocking facts about the secret battle going on in America during World War 2. Sara Vladic, an acclaimed documentary filmmaker, National Geographic historian, and coauthor of the bestseller Indianapolis, showcases her exhaustive research with 57 pages of reference notes at the back of the book. She doesn’t pull any punches, as she describes many heroic, selfless acts of sacrifice alongside those with narcissistic behaviours and unscrupulous natures, fighting together for America against the relentless German and Japanese war machines.
The Battle of the Atlantic was utterly dominated by the German U-boats in 1942. Thousands of merchant ships, oil tankers & Navy ships were destroyed, many right off the East coast of America. This book illustrates how woefully unprepared America was at first, then goes on to prove Plato’s adage, necessity is the mother of invention, with amazing American ingenuity and patriotism. The Civil Air Patrol was born and proved invaluable. Genius cryptologists created machines that broke the unbreakable German and Japanese war communication codes. The majority of these people were unheralded and kept in secret until decades later.
An ultra-secret, Navy-sponsored scheme called Operation Underworld succeeded in protecting much of the East Coast, utilizing the special talents of famous mob bosses and their vast network of contacts and longshoremen. There were many attempts by Nazi trained spies who came ashore in secrecy via U-boats, with orders to filter through America to sabotage critical infrastructure and destroy military targets. Some turned themselves over to the FBI, others were tracked down by Operation Underworld, or the FBI, or everyday citizens.
Meanwhile, the West Coast wasn’t safe either, as the Imperial Japanese Navy had submarines firing shells at the Los Angeles coast and cruising along critical shipping lanes in search of targets. In addition, Japan launched thousands of balloons packed with incendiary materials and bombs to inflict death and destruction deep into America.
This and much more is laid out in dramatic detail as the reader marvels at the high stakes involved, with lives on the line and the imminent danger of an American invasion. This would make for a spectacular TV series. I highly recommend this book when it is published for the public in March of 2026.
Thank you to William Morrow Books & HarperCollins Publishers for the special galley edition publication of this book to read and review.
The Dangerous Shore by Sara Vladic brings to light shocking facts about the secret battle going on in America during World War 2. Sara Vladic, an acclaimed documentary filmmaker, National Geographic historian, and coauthor of the bestseller Indianapolis, showcases her exhaustive research with 57 pages of reference notes at the back of the book. She doesn’t pull any punches, as she describes many heroic, selfless acts of sacrifice alongside those with narcissistic behaviours and unscrupulous natures, fighting together for America against the relentless German and Japanese war machines.
The Battle of the Atlantic was utterly dominated by the German U-boats in 1942. Thousands of merchant ships, oil tankers & Navy ships were destroyed, many right off the East coast of America. This book illustrates how woefully unprepared America was at first, then goes on to prove Plato’s adage, necessity is the mother of invention, with amazing American ingenuity and patriotism. The Civil Air Patrol was born and proved invaluable. Genius cryptologists created machines that broke the unbreakable German and Japanese war communication codes. The majority of these people were unheralded and kept in secret until decades later.
An ultra-secret, Navy-sponsored scheme called Operation Underworld succeeded in protecting much of the East Coast, utilizing the special talents of famous mob bosses and their vast network of contacts and longshoremen. There were many attempts by Nazi trained spies who came ashore in secrecy via U-boats, with orders to filter through America to sabotage critical infrastructure and destroy military targets. Some turned themselves over to the FBI, others were tracked down by Operation Underworld, or the FBI, or everyday citizens.
Meanwhile, the West Coast wasn’t safe either, as the Imperial Japanese Navy had submarines firing shells at the Los Angeles coast and cruising along critical shipping lanes in search of targets. In addition, Japan launched thousands of balloons packed with incendiary materials and bombs to inflict death and destruction deep into America.
This and much more is laid out in dramatic detail as the reader marvels at the high stakes involved, with lives on the line and the imminent danger of an American invasion. This would make for a spectacular TV series. I highly recommend this book when it is published for the public in March of 2026.
Review of advance copy received from Netgalley
Sara Vladic hits it out of the park once again for all World War II enthusiasts with her latest book, The Dangerous Shore: How a Motley Crew of Scientists, Mobsters, Double Agents, Retirees, Volunteer Pilots (and a Boy Scout) Stopped the Invasion of America. As is her calling card, Vladic demonstrates her skills of storytelling backed by rich and in-depth research.
There are so many facets to explore in this multi-leveled tale of unsung heroes whose work in the shadows kept American shores safe from German and Japanese attacks. That being said, I greatly appreciated the format of the book which was presented in a series of shorter vignettes. Had Vladic chosen a chapter format, I feel that readers would experience "information overload" and be expected to process too much at one time.
While others have noted that Vladic did not give as in-depth descriptions and analyses of the "characters" involved, I find that it was just enough to pique my curiosity and desire to learn more about some of these folks. The grand scale of material covered did not really allow for deep dives into character backgrounds; the focus was to relay the sacrifices these people made and how they stepped up when their country needed them most.
Finally, as a fairly new student of World War II, I want to emphasize how much I learned from this book! I had no knowledge about the majority of these stories. Until becoming involved with the story of the USS Indianapolis, in which Sara Vladic is also an expert, I only knew the version of history that was taught in school. The heroics of these folks were definitely not discussed in history texts!
Congratulations to Sara Vladic for yet another fascinating dive into history! I always enjoy traveling back in time with her.
*Thanks to Net Galley and William Morrow Publishing for this ARC!*
There are so many facets to explore in this multi-leveled tale of unsung heroes whose work in the shadows kept American shores safe from German and Japanese attacks. That being said, I greatly appreciated the format of the book which was presented in a series of shorter vignettes. Had Vladic chosen a chapter format, I feel that readers would experience "information overload" and be expected to process too much at one time.
While others have noted that Vladic did not give as in-depth descriptions and analyses of the "characters" involved, I find that it was just enough to pique my curiosity and desire to learn more about some of these folks. The grand scale of material covered did not really allow for deep dives into character backgrounds; the focus was to relay the sacrifices these people made and how they stepped up when their country needed them most.
Finally, as a fairly new student of World War II, I want to emphasize how much I learned from this book! I had no knowledge about the majority of these stories. Until becoming involved with the story of the USS Indianapolis, in which Sara Vladic is also an expert, I only knew the version of history that was taught in school. The heroics of these folks were definitely not discussed in history texts!
Congratulations to Sara Vladic for yet another fascinating dive into history! I always enjoy traveling back in time with her.
*Thanks to Net Galley and William Morrow Publishing for this ARC!*
Review of advance copy received from Netgalley
Welcome to another one of my patented (Note: you can't patent this) if/then reviews! Today we are looking at Sara Vladic's The Dangerous Shore. Is it a bad book? Absolutely not. Is it great? That is where the if/then comes in.
Vladic is looking at the lesser known aspects of World War II and specifically some names you won't find in most other books. Her focus is on the home front and how the shores of America were not necessarily safe from the war.
Now, let's go over the things which are quite good. Vladic is a very good writer and her writing is like a novel or a movie script. She has also done extensive research. For example, the first chapter alone has somewhere around 200 citations. It is a long chapter, but that is still sign of a deep search for facts.
However, the thing that completely took me out of the narrative was the breakneck speed of the entire book. Just in the description of the book alone, the following people are called out by name as vital to the story: Gill Robb Wilson, Joe Desch, Kenneth Knowles, Grace Buchanan-Dineen, Lucky Luciano, Meyer Lansky, and Socks Lanza. This isn't even everyone Vladic talks about. In addition to their individual stories, Vladic also has to set them in their time and place in order for any of this to make sense.
This is where the if/then comes from. For me, I'd rather read a book which took its time with each character. Kenneth Knowles is much more fleshed out in Alexander Rose's exceptional Phantom Fleet. The mobsters can be found in Matthew Black's Operation Underworld. Vladic talks about Charles Lindbergh and his ties to Nazism/antisemitism in the excellent America First by H. W. Brands. So, if you know a lot about World War II already, I think this book will be a miss for you and feel a bit too much like disjointed stories slammed together.
That said, did you look at my list above and say, "I don't have time for all that!" Well, this book alone clocks in over 500 pages (Note: I read an ARC so it is not the finished length necessarily). Good news, though, I think you'll love this! Vladic is a good writer, and these stories are interesting. The quick pace is absolutely a personal preference. In fact, I have Vladic's previous book Indianapolis on my shelf, and I fully intend to read it. I just think this book is a case of a good author trying to do a bit too much. If someone said they really wanted to read this, I'd say go ahead. I just didn't like it as much as I think I could have if Vladic tightened her scope.
(This book was provided as an advance reader copy by NetGalley and William Morrow Books.)
Vladic is looking at the lesser known aspects of World War II and specifically some names you won't find in most other books. Her focus is on the home front and how the shores of America were not necessarily safe from the war.
Now, let's go over the things which are quite good. Vladic is a very good writer and her writing is like a novel or a movie script. She has also done extensive research. For example, the first chapter alone has somewhere around 200 citations. It is a long chapter, but that is still sign of a deep search for facts.
However, the thing that completely took me out of the narrative was the breakneck speed of the entire book. Just in the description of the book alone, the following people are called out by name as vital to the story: Gill Robb Wilson, Joe Desch, Kenneth Knowles, Grace Buchanan-Dineen, Lucky Luciano, Meyer Lansky, and Socks Lanza. This isn't even everyone Vladic talks about. In addition to their individual stories, Vladic also has to set them in their time and place in order for any of this to make sense.
This is where the if/then comes from. For me, I'd rather read a book which took its time with each character. Kenneth Knowles is much more fleshed out in Alexander Rose's exceptional Phantom Fleet. The mobsters can be found in Matthew Black's Operation Underworld. Vladic talks about Charles Lindbergh and his ties to Nazism/antisemitism in the excellent America First by H. W. Brands. So, if you know a lot about World War II already, I think this book will be a miss for you and feel a bit too much like disjointed stories slammed together.
That said, did you look at my list above and say, "I don't have time for all that!" Well, this book alone clocks in over 500 pages (Note: I read an ARC so it is not the finished length necessarily). Good news, though, I think you'll love this! Vladic is a good writer, and these stories are interesting. The quick pace is absolutely a personal preference. In fact, I have Vladic's previous book Indianapolis on my shelf, and I fully intend to read it. I just think this book is a case of a good author trying to do a bit too much. If someone said they really wanted to read this, I'd say go ahead. I just didn't like it as much as I think I could have if Vladic tightened her scope.
(This book was provided as an advance reader copy by NetGalley and William Morrow Books.)
December 10, 2025
This is one of those books where you know the author spent a tremendous amount of time in research. It's in the small details that seem to have come out of someone's journal or information passed down in a family's history. It's historical non-fiction told in an approachable story form making it easier to keep track of the dozens and dozens of characters involved in this remembrance of a fraught time for the United States in the second World War.
I have always lived in the American west and had some knowledge of the attacks that had happened on the Oregon coast. I was completely ignorant of what happened up and down the east coast. The sheer volume of U-boat attacks on both civilian and military vessels was astonishing and unsettling. The fact that our government was in no way ready for a second world war was sobering, but how thousands of everyday Americans stepped up and got involved is truly inspiring.
Civilians became spies, civilians became codebreakers, civilians became pilots and sailors, and coastal look-outs until a time as the US government got up to speed. It took months and years. Most of it was volunteer, some of it was creating entirely new branches of service, and most civilians never got recognition or credit for their sacrifice. Let's just say I'm not a fan of J. Edgar Hoover.
Heartfelt thanks to William Morrow Books & HarperCollins Publishers for the special galley edition publication of this book. I loved this book, easy to read, understand, and it was so educational. Will wholeheartedly recommend to any WW2 fans when it comes into print in 2026.
I have always lived in the American west and had some knowledge of the attacks that had happened on the Oregon coast. I was completely ignorant of what happened up and down the east coast. The sheer volume of U-boat attacks on both civilian and military vessels was astonishing and unsettling. The fact that our government was in no way ready for a second world war was sobering, but how thousands of everyday Americans stepped up and got involved is truly inspiring.
Civilians became spies, civilians became codebreakers, civilians became pilots and sailors, and coastal look-outs until a time as the US government got up to speed. It took months and years. Most of it was volunteer, some of it was creating entirely new branches of service, and most civilians never got recognition or credit for their sacrifice. Let's just say I'm not a fan of J. Edgar Hoover.
Heartfelt thanks to William Morrow Books & HarperCollins Publishers for the special galley edition publication of this book. I loved this book, easy to read, understand, and it was so educational. Will wholeheartedly recommend to any WW2 fans when it comes into print in 2026.
Review of advance copy received from Netgalley
Subtitled “How a Motley Crew of Scientists, Mobsters, Double Agents, Retirees, Volunteer Pilots (and a Boy Scout) Stopped the Invasion of America,” this comprehensive account delves into the assault on America during World War II. Readers will gain valuable insights into the buildup to America’s entry into the war, German U-boat activity off our coast, and Japanese attacks on American land during the war.
Unprepared for this assault on American shipping, this chronicle of how a group of Civil Air Patrol, other civilians, and even the Mafia united to defend our shores is fascinating. It also offers insight into the arduous task of cryptologists both in the United States and in Britain in deciphering the secret codes of the enemy. The extensive research that went into this book is truly impressive. Some of the dubious actions of the FBI under J. Edgar Hoover demonstrate how in our present times, some things haven’t changed.
History buffs and World War II enthusiasts will relish this account. For others, it provides a glimpse into significant aspects of our history about which many people are unaware.
Thanks to @NetGalley and @WilliamMorrowBooks for the DRC.
Unprepared for this assault on American shipping, this chronicle of how a group of Civil Air Patrol, other civilians, and even the Mafia united to defend our shores is fascinating. It also offers insight into the arduous task of cryptologists both in the United States and in Britain in deciphering the secret codes of the enemy. The extensive research that went into this book is truly impressive. Some of the dubious actions of the FBI under J. Edgar Hoover demonstrate how in our present times, some things haven’t changed.
History buffs and World War II enthusiasts will relish this account. For others, it provides a glimpse into significant aspects of our history about which many people are unaware.
Thanks to @NetGalley and @WilliamMorrowBooks for the DRC.
March 10, 2026
So good, for so many reasons! I helped Sara research this book, so I may be a tad biased. BUT…you need this book! It follows an unlikely cast of characters from before the war, from the tenuous and dangerous first days, all the way through to its explosive conclusion at sea in 1945. You will see how the characters’ choices play out all along the way—the good, the courageous, the brilliant, the cowardly, and the villainous. Switching into present tense after Pearl Harbor (a real feat for a non-fiction historical book), you will travel through time with the book’s diverse cast seeing them react real-time to a world in turmoil. It’s got air battles, laboratory drama, international spies, gangster thuggery, and secret radio messages. It leaves the reader to decide who the real heroes and villains are, and everyone will find a relatable character. Read it for entertainment. Read it to enjoy the oddball characters. Read it to learn. Sara has woven a true non-fiction masterpiece on a grand scale. The sheer amount of research is clearly on display here, in an easily digestible form. You will be thrilled, you will be awed. Even the end notes have some gems!
Review of advance copy received from Netgalley
What a fine effort by author Sara Vladic, who gives us a detailed look at how unprepared the US was at the start of WW2. Not only that she writes extensively about the German U-boat threats to our shore, our shipping and our safety. To the lesser extent the Japanese also tried to so something similarly on the West Coast of America. The efforts of the Mafia, Civil Air Patrol, civilians who worked for the government, etc. are the unsung heroes who helped with the war. They helped break the Enigma Code, stopped spies in the US from Germany, helped save so many lives in the North Atlantic, and all without public or governmental recognition. Words cannot describe all the horror that happened just offshore the US.. Great job!!
March 4, 2026
This was a great historical nonfiction read. This book was extremely well written and the story is told in a way that was easy to digest. It was clear that the author spent a lot of time researching which made this a knowledgeable and engaging read. I loved how this book incorporated pages of photos that helped me to visualize the time period. This book was a bit out of my comfort zone, but I did find myself invested in reading this one. If you are interested in World War II this is one worth checking out.
Thank you @williammorrowbooks for the gifted copy of the book.
Thank you @williammorrowbooks for the gifted copy of the book.
Review of advance copy received from Publisher
This deep dive into World War Two on the home shores. Told through several mini segments each focusing on different elements of the groups of people that aided in defending the United States shores from the axis of evil. Some of the incidents that happened so close to the American shores will make you shudder. This was an excellent nonfiction book.
Thank you William Morrow for the complimentary review copy.
Thank you William Morrow for the complimentary review copy.
March 11, 2026
THE DANGEROUS SHORE - An interesting, well written, chronological history of WWII, beginning in the '30s. A description of all the players involved, their contributions, their results, and events without getting too deep into any one element. Nothing new but an easy-to-read, refreshing, understandable review of an important historical period. Source: NetGalley and HarperCollins Publishers. 5*
Review of advance copy received from Goodreads Giveaways
Historical non-fiction novel that makes you realize alot about war history.
Displaying 1 - 12 of 12 reviews