TV Guide Alibi Monday

A tourist is stabbed whilst travelling down one floor, all alone, in a hotel lift. As the team investigates the victim's loved ones, they discover a family with numerous skeletons in their closets - whilst an ominous woman watches everything unfold from the shadows. Meanwhile, an old face returns to St Marie, but isn't met with open arms. Guest starring Ronni Ancona and John Gordon Sinclair

Richard Poole meets up with a group of old university friends who have arrived on the island for a reunion, only for tragedy to strike when the man who has solved so many murders becomes the victim. Faced with such a sensitive crime, the commissioner quickly drafts in another British inspector to help the team get to the bottom of the mystery. It soon becomes clear that the newcomer, Humphrey Goodman, is just as eccentric as Poole - but he is also just as bright, and wastes no time questioning the partygoers, all of whom are prime suspects, while pondering the biggest mystery of all - how did the culprit commit the crime in full view of all the other guests? Kris Marshall joins the cast, with Ben Miller, Sara Martins and Danny John-Jules