Impulse (1974) directed by William Grefé and filmed in Tampa, FL (including identifiable shots at Busch Gardens.) It stars William Shatner (yes, Captain Kirk!), Harold "Odd Job" Sakata (from the James Bond movies), Ruth Roman and Jennifer Bishop (Mako: Jaws of Death, also directed by Grefé). A paranoid, leisure-suit-wearing conman/gigolo named Matt Stone seduces lonely women, bilks them of their savings via an investment scam, then kills them. When he begins seeing an attractive widow, her daughter Tina becomes suspicious of his motives.