Cornwall on the Rocks introduces Sven Ffolkes, a Norwegian policeman with an acute grasp of the British way. A woman is found dead on the rocks after a night of drunken revelry in a converted lighthouse. Sven uncovers a web of intricate relationships as he seeks to unravel the events of the previous night. Using his close-knit team of Cornish detectives, he discovers secrets and seething resentments in a series of encounters where observation is key. Suspects include the beautiful Kyomi who has a tragedy in her past; Alicia, a sensitive observer of life; David, the boyfriend who finds other interests; Carole, a confident young lady with ambition; her boyfriend James, a handsome, rugby-playing doctor; Todd, the wild child who grew up fast; his girlfriend Scarlett; and Nick, the only boy in a class of pharmacy students. We also encounter Big Porky Jewell, a larger-than-life drug dealer from Londonas East End. Cat lovers will appreciate the cameo performance of the hotel feline, Topsy, probably more than Sven did.