"Atmospheric, propulsive, and menacing . . . the perfect mystery to curl up with this autumn."—Lucy Clarke "Few writers can pull off a devilishly twisting mystery while infusing the story with such soul" —Emma Stonex A violent storm. An isolated hotel. A brutal murder. The Shell House Detectives are on the case—and everyone here is a suspect. The High Tide Hotel, overlooking stunning Trebaron Cove, is a dream destination for an autumnal getaway. But the serene atmosphere of this luxury enclave is shattered when the body of a guest is discovered on the terrace, directly below their balcony. The victim's friend is adamant that this was no accident, and when it emerges that the dead man was a detective with a chequered past, the police enquiry intensifies. Meanwhile fellow guest Jayden, one half of the Shell House Detectives, wastes no time in bringing Ally on board to help find the killer. With the hotel cut off by a storm on the night of the murder, everyone at the High Tide is a suspect. As Ally and Jayden delve deeper into the pasts of both guests and staff, they uncover a mass of secrets and complex connections. Who wanted this man dead—or rather, who wanted him dead most? As the tide turns, the investigation leads them into a life-or-death situation. Who will pay the final price for discovering the truth?