What the thief didn't find in the safe? (6,5)
I believe the answer is:
danger money
But I can't explain it at all! Could you help me understand?
(Other definitions for danger money that I've seen before include "Bonus payment for perilous work" , "Extra pay for risky job" , "Payment for taking risks" , "Extra pay for risk-taker" , "Compensation for those at risk" .)