Famous thriller author Frank O'Toole is found stabbed through the heart after taking an early morning swim in the ocean. Suspicion soon falls on the victim's wife Valerie, but with eyewitnesses confirming he was swimming alone, how could anyone have got from the house to the sea without being detected? Away from the investigation, Dwayne concentrates on finding a date for a voodoo love festival. Whodunit, guest starring Simon Callow, Imogen Stubbs, and Sian Gibson of Car Shame fame.