Goodreads helps you keep track of books you want to read.
Start by marking “The Girl Beneath the Sea (Underwater Investigation Unit #1)” as Want to Read:
The Girl Beneath the Sea (Underwater Investigation Unit #1)
Enlarge cover
Rate this book
Clear rating
Open Preview

The Girl Beneath the Sea

(Underwater Investigation Unit #1)

4.07  ·  Rating details ·  20,203 ratings  ·  1,426 reviews
For a Florida police diver, danger rises to the surface in an adventurous thriller by the Wall Street Journal bestselling author of The Naturalist.

Coming from scandalous Florida treasure hunters and drug smugglers, Sloan McPherson is forging her own path, for herself and for her daughter, out from under her family’s shadow. An auxiliary officer for Lauderdale Shores PD, sh
Paperback, 332 pages
Published May 1st 2020 by Thomas & Mercer
More Details... Edit Details

Friend Reviews

To see what your friends thought of this book, please sign up.

Reader Q&A

To ask other readers questions about The Girl Beneath the Sea, please sign up.
Popular Answered Questions
Ingo "Begin at the beginning and go on till you come to the end; then stop."
(Quote from Lewis Carroll - Alice's Adventures in Wonderland)…more
"Begin at the beginning and go on till you come to the end; then stop."
(Quote from Lewis Carroll - Alice's Adventures in Wonderland)(less)

Community Reviews

Showing 1-30
Average rating 4.07  · 
Rating details
 ·  20,203 ratings  ·  1,426 reviews

More filters
Sort order
Start your review of The Girl Beneath the Sea (Underwater Investigation Unit #1)
Nilufer Ozmekik
May 07, 2020 rated it really liked it  ·  review of another edition
What an exciting, action-packed, whirlwind, gripping roller coaster meets snorkeling ride I had! And the best part of it: we got a new unit named “UIU”: LEGAL PIRATES! Hurray! Ship ahoy! A crime thriller takes place under the sea! This is original concept and get ready to dive in after wearing your swimming gears!

We have the coolest duo: Solar& McPherson. We’re introduced with them at this first journey and first mission of them and I hope we may read more adventures in near future because I ha
Jul 22, 2020 rated it really liked it  ·  review of another edition
Shelves: audio
3.5 stars, rounded up
I was a fan of Andrew Mayne’s The Naturalist series, so I was curious about this new series. Given that I have been granted access to book two of the series through netgalley, I picked up this book from audible.
Sloan is a part time officer in the Lauderdale Shores Police force, working as a recovery diver. On a recreational dive in a canal, she surfaces to find the body of a dead woman having just been dumped. As the niece of a convicted drug trafficker, she soon finds hers
Chelsea Humphrey
Kindle First Read for April 2020!

"Andrew Mayne is an Edgar nominated author, Thriller Award finalist, star of Shark Week and A&E television’s Don’t Trust Andrew Mayne."

Clearly, Andrew Mayne is an international treasure and we must protect him at all costs. And this book sounds incredible.

*Many thanks to the publisher for providing my review copy.
Melissa ♥ Dog/Wolf Lover ♥ Martin
My Kindle First pick for April

Mel 🖤🐶🐺🐾
Jennifer ~ TarHeelReader
Oh my gosh, have you ever heard of a having a police diver as a main character in a book or series? Sloan McPherson works for Lauderdale Shores PD in Florida as a diver for evidence recovery. One day, instead of evidence, she finds an actual body, and it’s someone with ties to Sloan...

Now Sloan is being watched by an assassin and is racing against a cartel... She only has one person she can trust, the DEA agent who arrested her uncle.

I really loved Sloan as a character. She has secrets and comes
May 18, 2020 rated it really liked it
Shelves: audiobook
After seeing this recent publication by Andrew Mayne make such a splash across the reviewing platforms, I wanted to have a look for myself. Sloan McPherson has underwater diving in her blood, having grown up with it as her father taught her all there was to know. When she is not contracted out to dive for one of the local police services in Florida, Sloan is scouring the depths on her own. One day while pleasure diving—alone, a major faux pas—Sloan has a body dumped in the water in front of her. ...more
I already knew going into this book that I really liked Andrew Mayne's writing style and his character development. Mayne, never-the-less, surprised me with yet another great thriller, this time set in southern Florida and filled with drug cartels, corrupt politicians, pirates and MORE. Generally I'm not a fan of Florida or water based thriller but from the very first page Mayne had my attention and kept me glued to the pages until the very end. I don't want this to 1 of 2 in a series! I want it ...more
Apr 14, 2020 rated it really liked it  ·  review of another edition
Rated 3.5
May 07, 2020 rated it really liked it
I’ve read all of Andrew Mayne’s book and enjoyed them immensely. One reason I like them is that his lead protagonists are not the usual suspects - detectives, PIs, journalists or ex special forces. Instead we’ve had a computational biologist and a magician, from a long line of magicians, who also happens to be an FBI agent. This book introduces a new character, Sloan McPherson, of the semi-criminal, treasure hunting McPhersons. She is a police officer who specialises in underwater salvage (guns ...more
Check out all of my reviews at:

The Girl Beneath the Sea (Underwater Investigation Unit Book #1) by Andrew Mayne is the start of a new suspense/thriller series featuring a female law enforcement diver. This book has everything I look for in a thriller: a strong protagonist, realistic fast-paced action and continual escalating threats with surprise twists and turns. This book also has the added intensity of being set in the world of professional divers in south Fl
Sloan works as a police diver - a frogman (or frogwoman) as we'd say in the UK. I have no idea if the Americans say the same. She's the one the police call to scrabble around in muddy water looking for knives, guns or bits of dead bodies. And, because she's based in Florida, she's got alligators in a lot of the inland waterways just to keep life more exciting. Sloan's family have a bit of a reputation as pirates and salvagers and her uncle's in prison at the hands of the man - George Solar - who ...more
Apr 04, 2020 rated it liked it
This was a good thriller. I am a fan of Andrew Maine’s The Naturalist series and I found by comparison this wasn’t as good.
Yvonne (It's All About Books)

Finished reading: May 8th 2020

"Sometimes you don't get to choose your struggles - they choose you."

*** A copy of this book was kindly provided to me by Netgalley and Thomas & Mercer in exchange for an honest review. Thank you! ***

(view spoiler)
Apr 20, 2020 rated it really liked it  ·  review of another edition
Action-Packed, engaging, and suspenseful!

In this first installment of the Underwater Investigation Unit series, The Girl Beneath the Sea, Mayne has written an adrenaline-pumping tale featuring the intelligent, impulsive, police diver Sloan Harper who inadvertently becomes a suspect and a target when an old childhood acquaintance winds up dead and her family’s disreputable reputation and history as treasure hunters quickly becomes both an asset and a liability.

The writing is sharp and crisp. The
Alayne Emmett
Apr 07, 2020 rated it it was amazing
This was a prime first reads and it was excellent. It had all the elements that I love in a book, twists and turns and clues which make you try and guess who did what and to whom.
I read this very quickly as I couldn’t put it down and I wanted to find out who did the crime.
Oct 11, 2020 rated it really liked it  ·  review of another edition
Shelves: crime, thriller
Earlier this year, I read my first book by Andrew Mayne in The Naturalist series, and it is one of the best books I have read this year. This series is qute different from The Naturalist, but just as excellent. I guess I just like Mayne's writing style.

Mayne doesn't waste time on unnecessary descriptions or scenes that slow down the action. Everything happens quickly here, there are many twists and turns and unexpected events. If you like fast-paced thrillers, this is definitely the book for you
Kasa Cotugno
Apr 04, 2020 rated it really liked it
Florida is a great setting for a new series by Andrew Mayne, who lets his curiosity lead beneath the sea in a wetsuit. Sloan MacPherson comes from a family of treasure diving rascals, and while pursuing her Phd. in archaeology also has turned her experience as an experienced diver into a career with the Lauderdale force, retrieving sunken bodies as well as such specimens as tossed weapons. Sloan, who also is sharing parenthood with her daughter's father in a relationship she calls "complicated," ...more
Aug 15, 2020 rated it liked it  ·  review of another edition
Shelves: e-books, thriller
Sloan McPherson is a recovery specialist for the Florida police. She hails from a family with a shady background: salvage specialists, who are not above smuggling. Her uncle is in prison. She is trying to make amends, and while diving for work, a dead body is tossed into the water where she is working. Sloan is tough, but takes a lot of risks, especially with a young daughter and an estranged father. For me at least, this plot was highly implausible, and Sloan's miraculous escapes beyond belief. ...more
Peter Monn
Jun 01, 2020 rated it it was amazing  ·  review of another edition
Sooooo good!
Mogsy (MMOGC)
4 of 5 stars at The BiblioSanctum

Well, it’s not The Naturalist, but still so good! What’s also pretty awesome is that last summer I caught the author on the Discovery Channel Shark Week special Andrew Mayne: Ghost Diver, and now I can’t help but wonder how much of his experience doing for that show had ended up influencing this book. Plus I believe I read somewhere that Mayne grew up among scuba divers and law enforcement, so when I first learned about Th
May 23, 2020 rated it it was amazing
First, a caveat in full disclosure: I met Andrew Mayne when he was a young magician, and we struck up a friendship based on, among other things, the fact that we both wanted to be writers. Flash forward a couple decades after we lost touch, and one of us has written some fifty (?!) books, while the other one of us is a boring lawyer. (Le sigh.) Despite his tremendous success and hugely prolific body of work, I have decided to like Andrew anyway, and I finally got the chance to read one of his bo ...more
May 27, 2020 rated it really liked it  ·  review of another edition
3.5 rounded up. Fast-paced action. Innovative (underwater investigation).
Apr 10, 2020 rated it it was amazing  ·  review of another edition
Kindle first, you knocked it out of the park! This was thoroughly entertaining! A police diver from a treasure diving family finds herself in the middle of a dangerous search for a hidden half billion dollar stash of drug money.

But that’s not even what’s worth killing for...

Lol, I did have moments of doubt with some of the government conspiracy angles, but they did not bog down the story. Black Coral will be a hard wait.
Michael Slavin
5,700 Amazon Reviews and 17,000+ Goodreads reviews
Wow! Why 4 stars.

It's about:
A young woman underwater diver, who for extra money is a part-time Florida cop in the Everglades FLA diving for guns, bodies, or whatever else is thrown in the water. She gets deeply involved in trying to solve a crime, involving being underwater.

What I liked:
-The main character and a few others were very likable and well developed.
-Most of the underwater stuff was very interesting. Something different. I did not know
This was my first book by Andrew Mayne. This is the first book in a new underwater investigation series. It's told in first person POV by Sloan McPherson, a single mom who is a police diver in Florida. She discovers a dead body in a canal while on an archeology dive. The cops that play these mind games with her to make her out to be the killer, were very unlikable characters. She goes up against these corrupt cops and feds, and I found it very stirring. Sloan is a strong, fearless heroin, and I ...more
Apr 08, 2020 rated it liked it  ·  review of another edition
Amazon freebie and recommended by my brother who could not put it down. It is just not my favorite kind of story and/or heroine with "rough" edges.
It is just the thing, I suppose, for lovers of diving/boat stuff/weird sub stuff/bad cops/drug cartel ownership of officials/judges VS the little "guy" - or gal, in this case. She makes risky decisions at every turn even though she has a young daughter to keep safe.
There is a second book that I will not be reading.
Armand Rosamilia
First time reading this author and I feel like I've missed out on some great action, adventure and thrills. The cast of characters is interesting and believable, the plot has many twists and turns, and I'm looking forward to the second book coming out next year in what I hope is a long series.
Sep 19, 2020 rated it it was amazing  ·  review of another edition
I loved this. I found myself holding my breath in several places.
I was glad to see there is another book due out in this series in February. I am looking forward to checking in with this team again.

I found the characters brilliant and really enjoyed the internal chatter of slone.

My one and only gripe was the excessive use of the word interesting.
Alondra Miller
Apr 04, 2020 marked it as to-read
This is up for Kindle Freebie for Amazon Prime Users!
This one was pitched to me and it definitely caught my eye as I don’t remember reading anything with diving in it.

I liked Sloan. She’s tough and loyal and absolutely loves her job. There are a few other characters in this book, but we just got the surface with them. I did love all of the bickering between Sloan and her dad and could have easily read a million more scenes of them together.

Plot wise, it was okay. I was expecting this to be more of a thriller, but it felt procedural and all of th
« previous 1 3 4 5 6 7 8 9 next »

Readers also enjoyed

  • Don't Make a Sound (Sawyer Brooks, #1)
  • Legacy of Lies (Bocephus Haynes, #1)
  • Trust No One
  • Find Me (Inland Empire, #1)
  • Rain Will Come
  • Her Final Words
  • The Unspoken (Ashe Cayne #1)
  • White Out (Badlands Thriller, #1)
  • The Cipher (Nina Guerrera, #1)
  • Key Death
  • Texas Outlaw (Rory Yates #2)
  • Never Look Back  (Criminal Profiler #5)
  • Hide Away (Rachel Marin Thriller #1)
  • The Missing Sister
  • A Killer's Wife (Desert Plains, #1)
  • The Bone Jar (Detective Lew Kirby, #1)
  • How to Survive an Undead Honeymoon (The Beginner's Guide to Necromancy, #8)
  • The Last of the Moon Girls
See similar books…

Other books in the series

Underwater Investigation Unit (2 books)
  • Black Coral (Underwater Investigation Unit #2)

News & Interviews

Need another excuse to treat yourself to a new book this week? We've got you covered with the buzziest new releases of the day. To create our...
21 likes · 19 comments
“Sometimes you don’t get to choose your struggles—they choose you.” 2 likes
“Pelicans are simply an ungrateful mouth on wings.” 0 likes
More quotes…