The murder of a famed philanthroptist lands Trigger Daniels to prison and the death sentence, leading the Spectre to have to fight his ghost that comes to Earth to exact revenge on those responsible for his arrest and death.; Congo Bill and the professor encounter a mad scientist and his beautiful daughter in the middle of the jungle. The scientist is creating flesh-eating plants.; Bob and Tubby help refugees escape from Moravia.; Doctor Fate responds to Inza's thoughts after a sorceror tries to kill a millionaire with black magic and turns Inza to stone.; Sleepy and the Sergeant thwart a plot to blow up the Panama Canal using a stolen plane.