Inspector Frost found a frozen body in an abandoned meat locker. The heavy steel door was locked from the outside with a standard padlock. The victim had no signs of trauma, yet his skin was bright cherry-red. Frost touched the victim's jacket and realized the man didn't freeze to death; he was dead before he entered the locker. What gave away the secret?
Carbon monoxide poisoning
A bright cherry-red skin tone is a classic sign of carbon monoxide poisoning, which causes death long before cold temperatures can freeze a body. The killer placed him in the freezer afterward.
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: Medium. More like this: Detective riddles with answers or try Truth & Lie Island for a different kind of puzzle.
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