Not known
Regular panellists: John Arlott, F.R. Buckley, Robert Fabian
Regular actors: Jon Farrell as "Private Detective Joe McCready" and Hamilton Dyce as "Inspector Galloway"
BBC Home Service (Light Programme from 1957), 19 February 1954 to 9 October 1962
BBC-tv (2 one-offs), 23 November 1956 and 1957
"A problem in crime detection". Each episode started with a short crime play, written by Edward J. Mason. Then the three regular panellists got to "cross-examine" the characters in an attempt to name the guilty party.
A second TV episode was broadcast in 1957 with the panel replaced by John Dickson Carr, the famous crime writer.
Edward J. Mason and Tony Shryane
Foul Play was a similar format, played more for laughs.