Highway Patrol1955

[last lines]

[Dan Mathews sits alone, on the aisle, in the rearmost seat on a bus, directly behind a murder suspect. The passenger sitting next to the suspect disembarks, and when the bus resumes its route, Mathews draws his gun and places the muzzle on the neck of the suspect]

Chief Dan Mathews:
Keep your mouth shut. We get off at the next stop.

The Killer:
What's this all about? You don't even know me.

Chief Dan Mathews:
You're in the same spot the Santells were in. Slide over.