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Sea Castle

A Thriller

Sea Castle
Andrew Mayne By (author)
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Amazon/Brilliance Publishing

Limited ***

5.5 X 8.3 in
316 pg

FICTION / Mystery & Detective / Police Procedural
FICTION / Action & Adventure
FICTION / Thrillers / Crime


A Wall Street Journal bestselling series. A deep diving investigator is pulled into the depths of a string of unsolved serial murders in a riveting thriller by the Amazon Charts bestselling author of Sea Storm.

When a young woman washes ashore on a Fort Lauderdale beach, Sloan McPherson of the Underwater Investigation Unit is called in to consult. Sloan’s instinct says murder, but even then, there are too many questions.

For answers she reaches out to Gwen Wylder. The Miami homicide detective is notorious for being manipulative, bitter, a tyrant to her peers, and wicked smart. And she demands something in return from Sloan: fresh insight into seemingly unrelated cold-case murders and disappearances—and a possible serial killer trolling the Florida coast.

As loose ends of the old files begin to come together, another woman disappears. Sloan and Gwen are certain she’s the newest link in a deadly chain. They are determined to track her down before she dies, but they soon find themselves in uncharted waters. And the deeper Sloan and Gwen go, the stranger the case gets.


“The plot comes together like the proverbial puzzle, each juicy piece adding a bit to a disturbing big picture. A savvy police procedural that executes a familiar formula with panache.” Kirkus Reviews

“Mayne combines a brilliant, innovative female lead with a plausibly twisty plot. Kinsey Millhone fans will love McPherson.” Publishers Weekly (starred review)

“Mayne creates a world that blends the crime writing of Michael Connelly with high-tech oceanography in his Underwater Investigation Unit series…The series never ceases to be fascinating, making characters sink or swim as lives are on the line and the story veers in unexpected directions. Required reading for any suspense fan.” Library Journal

Author Bio

Andrew Mayne is the Wall Street Journal bestselling author of The Naturalist, Looking Glass, Murder Theory, Dark Pattern, and Angel Killer, as well as an Edgar Award nominee for Black Fall in his Jessica Blackwood series. Sea Castle is the fourth book in his Underwater Investigation Unit series, following Sea Storm, Black Coral, and The Girl Beneath the Sea. The star of Discovery Channel’s Shark Week special Andrew Mayne: Ghost Diver and A&E’s Don’t Trust Andrew Mayne, he currently works on creative applications for artificial intelligence as the science communicator for OpenAI.