Keen Detective Funnies #20

An anthology issue featuring multiple detective and superhero stories. "The Masked Marvel" investigates a mysterious plane crash in the mountains where a rescue party removes victims; suspecting sabotage rather than accident, he discovers the plane was destroyed without any explosive evidence and uncovers a connection to other unexplained explosions, ultimately determining the crash was not caused by explosives despite initial appearances. Additional stories in the issue include adventures featuring Spark O'Leary, Dan Dennis (F.B.I.), Amateur G-Man, Spy Hunters, "The Eye" (whose power ray repels attacking aliens), and Dean Denton.