Snape admitted why it didn""t work - he was the Half-Blood Prince and the creator of the spell ("You dare use my own spells against me, Potter?").In the musical bio filmThe Seven Little Foys (1955)about famed vaudeville star Eddie Foy (portrayed by Bob Hope), Cagney reprised his role as George M.This awe-inspiring film is one of the most dazzling UFO science fiction films ever made, although it has pre-digital special effects.With the tagline: "Shoot the Dead." BackgroundDial M For Murder (1954)is director Alfred Hitchcock""s screen version of English playwright Frederick Knott""s script.