Related Clues:

• Returning students go wrong
• Is hotel involved in chart error?
• One's quiet about plan's unhappy outcome
• Cause of a small setback
• Bad luck to some extent interrupting plan
• Mum and dad upset after motorway accident
• Mistake class members flipped over
• Unlucky occurrence
• Without protection, change of emphasis results in accident
• Accident sort of interrupts plan
• Mention the surprise party to the birthday girl, say
• Blow is hard, punching face
• Backsliding students make an error
• Bad luck, misadventure
• Trouble sort of occuring in plot