Related Clues:

• Out for the accused
• Murder mystery necessity
• You're looking at one
• Popular board game
• Pointer
• Defense, perhaps
• Crossword hint
• Bit of evidence
• Sleuth's need
• Legal defense
• Grounds
• ''I was at home sleeping at the time,'' e.g.
• It might be airtight
• Reason
• Crossword feature