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...