The new supernatural thriller from F. R. Tallis, who takes his readers under the wartime seas of the stormy North Atlantic in 1942, where not all those on board are invited . . .

A German submarine, U-330, patrols the stormy inhospitable waters of the North Atlantic. It is commanded by Siegfried Lorenz, a maverick SS officer who does not believe in the war he is bound by duty and honor to fight in.

U-330 receives a triple-encoded message with instructions to collect two prisoners from a vessel located off the Icelandic coast and transport them to the base at Brest—and a British submarine commander, Sutherland, and a Norwegian academic, Professor Bjørnar Grimstad, are taken on board. Contact between the prisoners and Lorenz has been forbidden, and it transpires that this special mission has been ordered by an unknown source, high up in the SS. It is rumored that Grimstad is working on a secret weapon that could change the course of the war . . .

Then, Sutherland goes rogue, and a series of shocking, brutal events occur. In the aftermath, disturbing things start happening on the boat. It seems that a lethal, supernatural force is stalking the crew, wrestling with Lorenz for control. A thousand feet under the dark, icy waves, it doesn't matter how loud you scream...

F. R. Tallis is a writer and clinical psychologist. Between 1999 and 2012, he received or was nominated for numerous awards, including the New London Writers’ Award, the Ellis Peters Historical Dagger, the Elle Prix de Letrice, the Crime Writers’ Association Historical Dagger Award, and two Edgar Allan Poe Awards. He is the author of The Sleep Room, The Forbidden, The Voices, and The Passenger, all available from Pegasus Crime. He lives in London.