Related Clues:

• On ___ (without a contract)
• Threat
• Hazards
• Particular, for short
• Something to build on?
• What a house may be built on
• Grave risk
• It's sometimes built on
• Some work may be done on it
• Problem for Pauline
• Danger
• Blueprint, briefly
• Some builders build on it
• On ___ (like some jobs)
• Blueprint detail