A counterfeiter was operating out of an abandoned warehouse. Police raided the location and found printing presses, ink, and stacks of forged hundred-dollar bills. When questioned, the printer claimed he was only printing educational flashcards for a local school. Why did the detective laugh and cuff him?
US currency is not used for school flashcards
Printing exact replicas of hundred-dollar bills goes far beyond educational flashcards, which do not feature currency designs or security threads.
About this riddle
Detective riddles are tiny mysteries. Look for the detail in the story that does not fit; it is usually the clue that solves the case.
Difficulty: Easy. More like this: Detective riddles with answers or try Truth & Lie Island for a different kind of puzzle.
More detective riddles
An explorer was found dead in his tent in the freezing tundra. Next to him was a battery-operated radio tuned to a local station, a flashlight, and a half-eaten protein bar. The official report ruled it an accidental death due to carbon monoxide poisoning from a faulty stove. The detective knew right away the report was fabricated by the killer. What evidence in the tent disproved the carbon monoxide theory?
A security guard reported a break-in at a high-end art gallery. He claimed a thief threw a heavy iron brick through the reinforced double-paned bulletproof glass window. The detective immediately arrested the guard. Why?
An antique pocket watch was stolen from a display. Three suspects were questioned: Mark said, 'I was at the gym.' Sarah said, 'I was reading in the library.' Tim said, 'I was fixing the broken elevator.' Detective Green arrested Tim immediately. Why?
The suspect claimed he was driving his vintage car down a dusty desert highway all night, pointing to a thick layer of dust coating his windshield. Detective Cruz arrested him immediately upon seeing the windshield. Why?
Detective Vance entered a dark apartment where a victim sat in an armchair, shot in the chest. On the coffee table lay a portable stereo plugged into a wall outlet, playing a cassette tape. The tape was near the end of side A. Vance pressed rewind, listened to the recording, and immediately identified the killer's voice. What crucial detail did the audio contain?
A wealthy banker was shot in his private study. His calendar was turned to Sunday, December 25th. The coroner established he died on a Tuesday in June. Why was the calendar set to December?