Stand By for Crime - The Black Hand

Chuck Morgan and Carol Curtis are having dinner at Nicodell's Restaurant, when a stranger comes to their table. He asks Chuck if he can talk to him for a minute. Chuck says "Sure, have a seat". The stranger says "My name is Frank Dawson, and I am a frightened man. Four nights ago, I witnessed a murder. I saw Elmer Hatfield shot to death". Carol says "Elmer Hatfield was the councilman who was murdered for cracking down on the rackets around the town". Chuck says "The police have been trying to find who did it.  Did you recognize the man who fired the shots, Frank?" Frank says "No, but I recognized the man driving the getaway car. His name is Jack Stone".  Carol says "You must have a good reason for not going to the police". Frank says "I do, look at this card". He reached into his pocket and pulled out the card. It had no writing on it, just the imprint of a black hand.