This is your FBI, originally broadcast September 20, 1946, The Diamond Studded Double Cross. A thoroughly rotten young man kills his step-father, steals the jewels from a stranger with amnesia, and rats on his own mother to the FBI! Also Part 4 of a 5 part Yours Truly Johnny Dollar story, The Imperfect Alibi Matter, originally broadcast September 20, 1956. Up pops an eyewitness and drives the final nail into the wrong coffin!