Hidden clues. Deadly wrecks. A ticking clock. When AJ Bailey heads to the Florida Keys for a scuba diving conference, she's looking forward to a relaxing trip. But when an old friend goes missing and his wife is in trouble, the holiday is over. Amid a sea of threats and lies, AJ has 24 hours to find her friend and the mysterious package he took, before payback will be taken in lives. With no idea where to start, and time running out, AJ soon discovers the answers may lie deep inside the infamous shipwrecks of Key Largo. Book Twelve in this best-selling series dives into the waters of the Florida Keys with fast-paced, edge-of-your-seat suspense, and a guest appearance by the marvellous Emily Durand from Nick Sullivan's 'The Deep Series'. Read in series order or as stand-alone novels.