This sound is from Strangers on a Train (1951)

"Strangers on a Train" is a classic suspense thriller film released in 1951, directed by Alfred Hitchcock. The story revolves around two men, played by Farley Granger and Robert Walker, who meet by chance on a train. Their casual conversation takes a dark turn when one proposes a diabolical plan to commit the perfect murder by swapping victims. As tension escalates, the pair becomes unwittingly entangled in a web of deception, danger, and psychological manipulation.

The film's cast also includes Ruth Roman, Leo G. Carroll, and Patricia Hitchcock. Alfred Hitchcock masterfully creates an atmosphere of suspense, utilizing his trademark techniques to keep audiences on the edge of their seats. The sinister plot, coupled with the intense performances, make "Strangers on a Train" a must-watch for fans of psychological thrillers.

If you're interested in experiencing the sounds and thrills of this iconic film, you can now play and download them here.