|Leonard Maltin/Plot synopsis:
Walker gives his finest performance as psychopath involved with tennis star Granger in ``exchange murders. '' Lorne is unforgettable as doting mother; so is merry-go-round climax. First-class Hitchcock, based on a Patricia Highsmith novel and coscripted by Raymond Chandler. Remade as ONCE YOU KISS A STRANGER and the inspiration for THROW MOMMA FROM THE TRAIN. British version of film, now available, runs almost two minutes longer, has a different ending and franker dialogue in the first scene where Granger and Walker meet.