Double Zero

CBS Radio Mystery Theater "Double Zero" is a Mystery from Thursday, December 23, 1976.

Police find five twenty-dollar bills, each marked with two zeroes written in red, in the wallet of murdered private eye Luther Bendow. When, on television, private citizens are asked to provide any information they might have on the killing, a man tells police he gave the marked bills to his landlord. He says he always marks such bills so cashiers can’t cheat him when making change. Little does he know how important these bills are to become in apprehending the murderer.