Inspector Lane entered a locked study where a man sat slumped over his keyboard. The computer screen showed an email draft confessing to embezzlement. The email was timestamped 3:15 PM, exactly when the victim's heart stopped. Lane shook his head and said, 'The killer typed this after the murder.' How did he know?
The victim's watch was stopped at 3:15, but the computer log showed keystrokes happening at 3:18 PM.
Actually, the text says the victim's heart stopped at 3:15 PM. If the killer typed the email after the victim died, the timestamp of the draft or the file modification metadata would reveal creation time after the known time of death.
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.
More detective riddles
An antique pocket watch was reported stolen from a display shelf. Three employees had access: the cleaner, the cashier, and the manager. The cleaner said she was dusting the top shelf. The cashier said she was counting drawer receipts. The manager said he was looking out the front window. Vance arrested the manager instantly. Why?
An antique pocket watch was reported stolen from a display. Three suspects were questioned: Arthur said he was reading, Beatrice said she was polishing silver, and Charles said he was looking at his own watch. Detective Roy arrested Charles immediately. Why?
Three kids race to build the tallest pencil tower. Ava finished before Ida. Ida finished before Max. Who finished last?
Detective Thorne interrogated four suspects regarding a stolen diamond. Alice said Bob did it. Bob said Charlie did it. Charlie said Bob is lying. Diana said she didn't do it. Only one person is telling the truth. Who stole the diamond?
The famous violinist was found dead in her dressing room, strangled with a G-string from her violin. The local police suspected a robbery, but her diamond necklace and cash were untouched. Detective Finch examined the violin case on the table and noticed the bow was missing, but the rosin block was shattered. Finch shook his head and said, 'It wasn't a stranger.' Who was the killer?
Five guests sign the hotel log one by one, and the manager remembers only these facts. Felix signed before Dmitri. Aria signed before Felix. Gwen signed before Aria. Boris signed before Gwen. Who signed second?

