Synopsis by Hal Erickson
Created by Lewis Griefer, the British series Who-Dun-It was a combination mystery series and audience-participation show. Each week for 13 weeks, Inspector Jeremy Moon (Gary Raymond) was assigned to solve a baffling murder. Just before Moon announced his findings, the home viewers were given all the clues and invited to supply their own solution (a gimmick previously utilized on several American and British radio series, notably "Ellery Queen"). Who-Dun-It was originally broadcast in 1969.