Hawaii Five-O (1968)

S2E4 Just Lucky, I Guess

A middle-aged hardware salesman from the mainland finds himself entangled in a dangerous situation when he hires a prostitute, only to witness her brutal murder at the hands of a mobster. Fearing for his reputation and wanting to avoid involvement, he hesitates to come forward as a witness. It's up to McGarrett to convince him to step up and do the right thing, despite the risks that come with it.