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A terror-stricken crew sails the oceans. A cold-blooded killer is on the prowl. Can the ship's doctor stop the bloodshed before she ends up dead?

Dr. Emma Steele is shattered. The lonely doc left home to flee her black cloud and see the world. But when a wave of casualties strikes her ship, her hopes for peace are crushed.

Determined to stop the slaughter, Emma follows her gut to track the killer. But nabbing one man out of thousands is like finding a needle in a moving haystack, and she fears that her crew doomed. Can the willful doc outsmart a ruthless assassin to save her people, or will she rot in a watery grave?

Do Harm is the riveting fourth book in the ER Crimes medical thriller series. If you like strong female sleuths, fine medical details, and exotic travels, you'll love Rada Jones MD's engrossing tale.

Read DO HARM today to dive into a pulse-pounding adventure.

302 pages, Kindle Edition

Published April 1, 2023

396 people are currently reading
78 people want to read

About the author

Rada Jones

21 books50 followers
Rada was born in Transylvania, ten miles away from Dracula's Castle. Growing up between communists and vampires taught her that humans are fickle, but one can always rely on dogs and books.
After she immigrated to join her husband, she went to medical school, then worked in the ER for years, but she still speaks like Dracula's cousin.
Her thrillers feature Dr. Emma Steele, a not-so-young ER doc with a moody teenage daughter and a fondness for wine. If blood, gore and serial killers turn you on, check out OVERDOSE, MERCY, and POISON. If you're into dark medical humor, check her STAY AWAY FROM MY ER. But if you're into dogs, the K-9 Heroes series is for you.
To celebrate Gypsy, Rada's beloved German Shepherd, Emma adopted a quirky, bacon-loving K-9 named Guinness who runs her life through Mercy and Poison.

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5 stars
250 (55%)
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143 (31%)
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52 (11%)
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Displaying 1 - 13 of 13 reviews
Profile Image for Laura  Felty.
169 reviews22 followers
July 12, 2024
Very fun read

I love cruising. Dr Emma had to have a break from the ER. Why not do a contract gig on a cruise ship. I really did not predict this one.
Profile Image for Jeanine.
245 reviews4 followers
May 20, 2023
Fast read

Have you ever been on a cruisse? Well, This one is a doosie. You learn about what is in the bowels of the ship. Beware of the staff though.
Profile Image for Christine Cazeneuve.
1,463 reviews40 followers
December 6, 2025
So Exciting

These books are massively entertaining even if I truly believe that Emma is cursed lol! The stories will keep you guessing as to whodunit and are always satisfying. This is the fourth book in the series and my favorite so far. It takes place on a cruise ship and I loved learning about all the fascinating places, history, culture, cuisine and traditions that the different ports of call offered. Much different than the previous books. Can't wait to dive into the next one!
125 reviews1 follower
January 10, 2024
A fast moving, laugh out loud mystery

I enjoyed this book so much, I could hardly put it down. Sadly, it ended. Now I have to find more books by this author. Excellent writing. Draws the reader into the shipboard medical and keeps her there. Brava, Ms. Jones!
25 reviews2 followers
October 6, 2025
Another great book by Rada

Wow, couldn’t put it down it was riveting and exciting. Wasn’t able to suss out the villain. I’m usually good at doing that but not this time. Fast moving, great characters, a terrific read.
39 reviews
October 10, 2023
Different

This one didn't grab me like the others. One really exciting scene but mostly ho hum. Love Emma and her dog.
8 reviews
June 1, 2025
awesome

It was a shame when I finished…it was so good! Cannot wait to start the next one in the series.
265 reviews1 follower
June 17, 2025
Neat

Hard to imagine such crazy things happening on a cruise ship but interesting read nonetheless. Refreshing to no longer hear about her useless daughter.
115 reviews
June 20, 2025
again and again a great read

Love the book, it’s great cast, Emma Steele and of course Guinness as I always have a soft spot for dogs, although I think he is more human than dog.
443 reviews3 followers
November 7, 2025
Loved the first 3 books in this series but only liked this book for some reason. Hopefully #5 is good as the forst three
5 reviews
December 3, 2025
entertaining and informative

Great read! Another thrilling adventure. A bit predictable at the end, but kept me intrigued. Looking forward to the next book
Profile Image for Brandi McCain.
9 reviews
February 3, 2025
(Yawn) How many times can the same dr just happen to meet a killer?? Lol It was an ok book. I only read it because it was part of the series. But it definitely was not as n interesting as the first and second.
Displaying 1 - 13 of 13 reviews

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