Tunnel of Secrets

Hardy Boys Adventures #10

by Franklin W. Dixon

When Frank and Joe set out to explore caves and tunnels, they dig themselves into some dark and dangerous trouble in this Hardy Boys adventure.

When a sinkhole opens up and swallows one of Bayport's historic statues, Frank and Joe suspect something, or someone, shady at play. They jump at the chance to investigate; Joe as a member of an urban exploration club, and Frank as photographer for the school paper.

But in the thick of their search, the boys stumble upon an entire underground city that's been abandoned for years. Now the city is home to a cultish band of criminals who plan to take over Bayport. Frank and Joe are determined to shut down the crooks, but after being barreled down by a boulder and nearly squashed by a runaway train, they have to wonder: are they in over their heads?

Genres: Mystery, Middle Grade, Adventure, Young Adult, Fiction, Childrens, Audiobook

144 pages, Paperback

First published October 20, 2015

About the author

Franklin W. Dixon is the pen name used by a variety of different authors who were part of a team that wrote The Hardy Boys novels for the Stratemeyer Syndicate (now owned by Simon & Schuster). Dixon was also the writer attributed for the Ted Scott Flying Stories series, published by Grosset & Dunlap.
Canadian author Leslie McFarlane is believed to have written the first sixteen Hardy Boys books, but worked to a detailed plot and character outline for each story. The outlines are believed to have originated with Edward Stratemeyer, with later books outlined by his daughters Edna C. Squier and Harriet Stratemeyer Adams. Edward and Harriet also edited all books in the series through the mid-1960s. Other writers of the original books include MacFarlane's wife Amy, John Button, Andrew E. Svenson, and Adams herself; most of the outlines were done by Adams and Svenson. A number of other writers and editors were recruited to revise the outlines and update the texts in line with a more modern sensibility, starting in the late 1950s.
The principal author for the Ted Scott books was John W. Duffield.

Reviews

[Daniel]

4.25 stars

[Aurora]

This book was better than the last one I read in the series, but I'm not too keen on the boys having a crush nearly every book. Joe Hardy was becoming more like Little Joe Cartwright, and though I do like both characters, I wanted them to be a little more different than that, like how they used to be. But everyone has to have the flirt, and poor Joe got the stick. I mean, sure, Joe technically was the flirty one, but he wasn't flirting with every girl that walked into his path. This is the same beef I have with the 1970's series (though in that series I guess I could overlook it, there was no Iola even though they had Chet). That wasn't the Hardy boys. They have their charm, and this series seems to have lost some of that. But despite that, I liked this book. Probably because I kept thinking of National Treasure. XD

[Freely Grisham]

I LOVE these books!
Probably not super great for under 11 or 12 years!
I really like how it can be a “ghost” story but in the end it’s always a person trying to get money or fame or something. Every book is exiting and there’s lots of danger but it all ends up ok!

[Grace]

Perfect balance of creepy and mysterious! Great to read around Halloween! It reminded me a bit of National Treasure.

[John Ready Reader One]

Probably 3.5. This is one of the better ones in the series.

[Craig Jr.]

I finished Hardy Boys Tunnel of Secrets and it was a lot of fun. I enjoy the short mystery books, and these more modern Hardy Boys have been entertaining. I still need to go through and read through the original few hundred, but these are the ones I found in audio on Hoopla to borrow.

The Hardy Boys investigate a kidnapping and find an underground city and a mystery of missing treasure. It was a lot of fun. Again, these Hardy Boys books don’t do a great job with adding up clues and suspects. They’re more of light fun with reveals at the end you didn’t see coming because there wasn’t enough information presented, but still a lot of fun.

[Emma]

Hardy Boys Adventures, Book 10: Tunnel of Secrets is the halfway point in the 20-book boxed set of the series I recently bought at Ollie's. It's also the 3rd consecutive book in the series that I've rated 5-stars. I think it might actually be my favorite 1 so far. A key reason for that is because it gave me some real Indiana Jones vibes. First off, the title, Tunnel Secrets, reminds me of Tunnel of Doom. And like that movie, this books features hidden passageways and secret societies. It was seriously amazing!

[Tuti]

A sinkhole opens up taking a Bayport statue with it, while Joe is exploring the tunnels underneath with other members of an urban exploration club.

It's another short, exciting adventure of the Hardy Boys, which unfortunately I can't remember the details of because I listened to this over a week and many other books ago.
The only thing I remember that strikes me as odd is how some random guy allegedly could do something (engineered a place with modern conveniences) so "advanced".

[Gilbert Stack]

This was the least believable of the Hard Boys Adventure stories. Apparently, underneath he city of Bayport is a maze of elaborate tunnels with secret construction that nobody today really remembers are there. Frank and Joe stumble into a mystery that keeps them underground for most the story, fighting a cult trying to find an ancient treasure. The story is exciting, but not particularly plausible.

[Kristi]

Great book about a secret criminal society full of secret city’s passageways and chamber hundreds of feet underneath the town of Bayport full of legends secret society and pirates treasure curses and riddles starting with Bayport statue of admiral James t Bryant statue falling into a sinkhole and the struggle to protect what is good.

[V. Arrow]

A note on the audiobook: they needed a better pop filter for phrases like "powerful people in Bayport." The P's were ::pops:: painful.

However, the story was fun. I do like a baddie who's just batcrap crazy

[Raine]

i don't know why the only constant in my life rn is the rebooted hardy boy books but here we are. this one was pretty awesome i think the pacing was a massive step up, everything basically took place in one day

[Isaiah (aka Isaiah Ward) Herrero]

Racing through a cave, Indiana Jones style, absolutely nuts, this one was so good, just the right amount of adventure I need. (I hope that if the publishers are reading this review that they make a series just for adults, as I would absolutely love it.)

[Leyla]

I LOVE THIS NEW HARDY BOYS SERIES, ESPECIALLY THIS ONE IT WAS TOTALLY AWESOME, IT WAS PERFECTLY BALANCED BETWEEN CREEPY AND MYSTERIOUS. I WOULD DEFINITELY RECOMMEND THIS BOOK.

[Rachel Flavin]

Took 10 Hardy Boys to finally lose a star

[Melmo2610]

I really liked this mystery with historical aspects. The mystery held my attention throughout, and the ending was interesting.

[YugTheProPirate]

Enjoyable and entertaining and I dont like joe and frank for having new crushes every book.

[Cindy]

Tunnel of Secrets

[Jan Raymond]

I wish these book descriptions would inform us that this is a modern update of the original. The Hardy boys checking the internet, texting etc.

[Katy Lovejoy]

I enjoy this series more than I thought i would and other than my Trixie belden phase I never was a mystery lover

[Kate Drew]

Another great Hardy Boys book with a great twist

[J.T. Brock]

Not a bad entry in the series. One of the better Hardy Boys Adventures. Looking forward to the next one