Sian Evans is found shot dead in her backpackers hostel showers. With a gun in her hand and her body slumped against the door, it all points to suicide. All the hostel residents are on a boat tour except for her boyfriend, the manager, a woman missing from her home in Wales and Leo, a recent arrival. Humphrey and the team discover they all had a motive to kill Evans . The only clues are her toiletries laid out and her missing towel. JP marries Rosey Fabrice and Humphrey meets an old girlfriend.