Related Clues:

• Sense of danger
• Chili heat unit
• Loss of heart
• Car noise?
• Frequent morning surprise
• Chili rating unit
• Break-in deterrent
• Butterflies, say
• Warning of a sort
• Antsy feeling
• Screamer at a crime scene
• Pacing-the-floor state
• Klaxon
• Fill with consternation
• Security warning