Boris Karloff, Marjorie Reynolds, Grant Withers
A pretty Chinese woman, seeking help from detective Wong, is killed by a poisoned dart in his front hall, having time only to scrawl "Captain J" on a sheet of paper.
Sidney Blackmer, Rick Vallin, Byron Foulger
Police Commissioner Thatcher Colt and his aide, Anthony Abbott, using their usual methods of science and deduction set out to solve the murder of an opera singer.
Frankie Darro, Marjorie Reynolds, Mantan Moreland
A none-too-popular (nor good) radio singer is murdered while singing on the air in a radio studio. Radio page boy Frankie Ryan and his janitor pal, Jeff, solve the mystery.