Related Clues:

• One's out
• A witness may verify one
• Secretly follow
• "I was at my friend's all night," e.g.
• Barbary ape's lack
• 'I was volunteering at the orphanage at the time of the murder,' e.g.
• Streamer on a kite
• Spiked part of a stegosaurus
• Follower, as in espionage
• Comet component
• Criminal explanation
• Element of a murder mystery
• What you might catch a tiger by, in a saying
• ''I ran out of gas,'' e.g.
• Suspect's shadow