The Asphalt Jungle
(1950)

Film noir directed by John Huston.

Doc (Sam Jaffe) has just been released from prison and has a plan for a jewel heist. He gets a lawyer to finance it but the lawyer is broke and the lawyer's P.I. comes up with an idea for a double cross....

During the double cross Sterling Hayden is shot by the P.I and the lawyer's P.I. is shot to death by Sterling Hayden.

The bookie who was a go-between and actually financed it squeals after being identified for seeing Doc on the day of his release, which causes....

 Thanks Don P!