Related Clues:

• Word in a supposed Cagney quote
• He sings to the man
• Supply a number
• Singer behind prison walls?
• Mongoose's prey
• See 89-Down
• Traitor
• Jailhouse bean-spiller
• Type of race
• Unfaithful one
• Cooperate with the cops
• Disloyal sort
• Do a number
• Judas
• Informant