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Down to a Sunless Sea
Paperback
Publisher: Northampton House Press
Published: Jul 8 2026
Pages: 420
Weight: 1.07
Height: 0.93 Width: 5.50 Depth: 8.50
Language: English
A powerfully written Florida adventure . . . a compelling glimpse at the mysterious world of cave diving. - The Orlando Sentinel
One of his best novels yet . . . bristles with suspense . . . What makes this novel particularly memorable are the extensive, harrowing descriptions of cave dives, which are riveting enough to terrify experienced divers. -Publishers Weekly
Fans of Clive Cussler will love this thriller. An essential purchase. - Library Journal.
White-knuckle diving scenes, constant action. - Kirkus Reviews
Tiller is a character who grows on the reader . . . As usual, Poyer provides a smashing climax, this one fraught with danger from man and nature. - Jacksonville Times-Union
There can be no better writer of modern sea adventure around today. - Clive Cussler
Claustrophobics beware! David Poyer's suspenseful cave-diving novel, DOWN TO A SUNLESS SEA, takes readers into water crevices, submerged limestone tunnels, cramped wormholes and subterranean hell holes that give suffocation new meaning . . . Vivid, believable descriptions . . .We can get the fear and adrenaline of cave-diving without ever leaving the dry safety of our favorite comfy chairs. - Tallahassee Sun Democrat
Depth: 105. Wriggling like an eel, he forced himself up into the narrow gap he'd created . . . Rocks scraped and clattered away. A hint of doubt - should he be doing this? - was answered by the calm comfort that pervaded his mind now. Nothing was going to happen. Everything was going to be all right. . . . .
Welcome to the most dangerous sport on earth: where cave divers step into murky Florida ponds and end up hundreds of feet below the ground, threading through the narrow passages of Swiss-cheese-like rock formations, heading down tunnels that may open into caverns of breathtaking beauty, or else suddenly collapse in rockfalls that crush out their air and their lives.
Open-water diver and ex-con Tiller Galloway has come to this watery underworld to find out why an old friend died young - and take one last shot at being a father, a lover, and a friend. But with a woman opening up her heart, and a deadly conspiracy closing in around him, Galloway must navigate between lies told aboveground and truths hidden in the depths . . . where a violent battle is about to explode.
Combining the knife-edged action of Clive Cussler with the heart stopping storytelling skill of John D. MacDonald, USA Today-bestselling Dave Poyer continues to be one of American's most popular and remarkable thriller writers . . . and a master of underwater suspense.
A ripping good read! Poyer raises the bar with this one. The cave-diving scenes are riveting, claustrophobic, terrifying, and beautiful. - Booklist
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