A prime witness against a powerful crime syndicate, former hit man Gary Stevens escapes his would-be assassins by taking up residence in a lonely island cottage. One day during a violent storm, a beautiful young girl pounds on the door in her bathing costume and begs to be allowed in out of the rain. Stevens cautiously agrees, and finds himself attracted to his mysterious visitor, who confesses that she recognises Stevens' face from the newspapers. Subsequently, the girl returns to the island and a romance blooms, but she still refuses to give any details about herself other than that she is married to a wealthy older man whom she does not love. Stevens, now fully under the girl's spell, acquiesces to her plan for him to murder her husband and share in the money. The deed goes ahead, but then events begin to take a bizarre turn...
WRITTEN BY: Brian Clemens
DIRECTED BY: James Ormerod
PRODUCED BY: Ian Fordyce
MAIN CAST: Bradford Dillman (Gary Stevens), Suzan Farmer (Gilly), Ian Bannen (Doonan), Philip Stone (Burton), Diana Weston (Helen Wiles)