The Dark Beneath was previously published as Tenacity.

'ADDICTIVELY READABLE' - Patricia Cornwell, number one bestseller

'I READ THIS IN A DAY AND CAN'T WAIT FOR THE NEXT' Clare Mackintosh, I LET YOU GO

'AN IMPRESSIVE DEBUT...GRIPPING, ENTERTAINING READING' The Times

In this breathless thriller Lieutenant Dani Lewis must uncover the dark truth after a suspicious death on a Navy submarine. Fans of M.J. Arlidge and Elly Griffiths will be absolutely gripped.

A sailor is found dead on board the Navy submarine Tenacity.

Although it's ruled a suicide Lieutenant Dani Lewis, fearless star of the Special Investigations Branch, knows the man's wife was found brutally murdered only days before. Now she must enter the cramped confines of HMS Tenacity and interrogate the tight-knit, male-only crew to determine if there's a link.

Trapped deep in the ocean - the only woman on board with a possible killer in tow - the pressure rises quickly for Dani Lewis. And she may need to choose between the truth and her own survival if she's to make it out alive.

Two hundred metres below the surface, she will have nowhere to run and nowhere to hide...

'IF LAW MANAGES TO HOLD HIS COURSE INTO NUCLEAR NOIR, THIS SERIES COULD GO FOR AS LONG AS THE ATOM-POWERED TENACITY' The Sun

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