Related Clues:

• Sounds like you knocked the scoundrel outside ... thank you, thank you!
• "The Public Enemy" sound effect
• Knock three times at door ultimately to open it
• Knock what's said on departing into desert
• Cad to refuse evidence of 17s?
• Sound heard at door right next to empty apartment - thrice
• Knock what the discerning vermin wouldn't buy?
• Sound of knocking
• Sound application for prospective opening
• Sort of noise outside that usually opens doors
• Gangster movie series
• Knock on wood, say
• Rapid fire sound
• Knock on doors for informer with rubbish
• Gangster-film sound