Related Clues:

• A party needs one - it may help you to get off
• Court evidence showing one was elsewhere
• A third party insurance launched as a defence
• Excuse one's used in French town
• Dangerous driving perhaps in cold and frost
• Crossword help
• Legal offence
• Left in bloody predicament by untidy room
• Proof that one was elsewhere
• Declaration of political allegiance constituting defence?
• Reason for Macavity's lack of presence
• Excuse totally for cutting book in two
• A politician, I can offer a valid defence against most charges
• Evidence of rotten heart of America?
• It helps solve a crime