In a dimly lit warehouse, a security guard was found unconscious next to a spilled cup of coffee. Three delivery drivers were present. Driver A claimed he delivered boxes at noon. Driver B claimed he dropped off envelopes at 3 PM. Driver C claimed he brought a package at midnight. The warehouse logs showed power had been completely shut off from 10 AM to 4 PM, plunging the interior into pitch blackness. Who lied?
Driver A and B
Since the warehouse was in pitch blackness from 10 AM to 4 PM, anyone delivering boxes or envelopes during those hours would need a flashlight or couldn't see to navigate, but Driver A (noon) and Driver B (3 PM) claim to have conducted standard drop-offs during the blackout without mentioning the dark.
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: Hard. More like this: Detective riddles with answers or try Truth & Lie Island for a different kind of puzzle.
More detective riddles
Three kids race to build the tallest chick tower. Ana finished before Leo. Kai finished before Ana. Who finished last?
The famous painting of the Duchess was slashed during a museum gala. Three suspects were questioned: the curator, the janitor, and the art critic. The curator had ink stains on his fingers. The janitor had paint flecks on his overalls. The art critic had a small papercut on his index finger. The detective arrested the critic. Why?
A wealthy banker was shot in his study. The safe was open, and cash was strewn everywhere, but the diamond ring on his finger was untouched. Detective Cole looked at the scene and told his partner it was a personal vendetta, not a robbery. Why?
A suspicious package arrived at Scotland Yard containing a sealed glass jar filled with liquid water and a live goldfish. Attached was a note: 'I will flood the city archives at noon.' The bomb squad evacuated the room, but Detective Miller laughed and told them to unpack it. Why was there no danger?
Detective Miller found a coded diary next to a poisoned diplomat. The cipher substitution was simple: every letter shifted forward by three. The final sentence read: 'THE ENEMY HAS ARRIVED AT DAWN.' Miller immediately realized the diary was a forgery planted by the diplomat's secretary. What was the flaw in the diary?
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?

