76-12-23 CBS Radio Mystery Theater Double Zero

Plot
A private investigator working an adultery case stumbles on a murder. Five $20 bills with two zeroes written on them provide the clues.
Episode
0570
Air Dates

First Run - December 23, 1976
Repeat - April 10, 1977

Actors

Robert Dryden
William Griffis
Earl Hammond
Bryna Raeburn
Joan Shay