<P> The story of the murders is told in flashback, after the subjects' arrests . Smith and Hickock are both found guilty of the crime and sentenced to be hanged . A representation of their final moments and their execution is presented at the conclusion of the film . </P> <Ul> <Li> Robert Blake as Perry Smith </Li> <Li> Scott Wilson as Dick Hickock </Li> <Li> John Forsythe as Alvin Dewey </Li> <Li> Paul Stewart as Jensen, the reporter </Li> <Li> Gerald S. O'Loughlin as Harold Nye </Li> <Li> Jeff Corey as Dick's father </Li> <Li> John Gallaudet as Roy Church </Li> <Li> James Flavin as Clarence Duntz </Li> <Li> Charles McGraw as Perry's father </Li> <Li> Jim Lantz as Officer Rohleder </Li> <Li> Will Geer as Prosecuting attorney </Li> <Li> John McLiam as Herbert Clutter </Li> <Li> Paul Hough as Kenyon Clutter </Li> <Li> Ruth Storey as Bonnie Clutter </Li> <Li> Brenda C. Currin as Nancy Clutter </Li> <Li> Donald Sollars as Clothing Salesman </Li> </Ul> <Li> Robert Blake as Perry Smith </Li> <Li> Scott Wilson as Dick Hickock </Li>

Who played in the movie in cold blood