Barnaby Jones (1973)

S3E13 The Last Contract

A hitman, smitten with a girl, resolves to leave his dangerous profession behind. However, his younger brother, who looks up to him, hopes he continues his work. Barnaby is brought in by the girl's family to track her down. As he investigates, he inquires about her boyfriend, the hitman. When the brother discovers Barnaby's involvement, he attempts to handle the situation himself. Unfortunately, his efforts spiral out of control, leading to unforeseen complications.