Expert Deduction #11
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The Case
A diamond was stolen from a jewelry store's first-floor vault during a fire alarm evacuation (2:15–2:40 PM). Five employees were in the building: Rhea (third-floor office), Vince (second-floor stock), Petra (first-floor sales), Hans (first-floor security), and Sylvie (basement inventory). Case file EXPERT-011.
Who stole the diamond?
Evidence (9)
#1The fire alarm was pulled from the third-floor pull station at 2:15 PM.
#2Elevator log shows Rhea arrived on the third floor at 2:14 PM.
#3During evacuation, all employees were supposed to gather in the parking lot.
#4The parking lot headcount photo at 2:20 PM shows Petra, Hans, Sylvie, and Rhea. Vince is missing.
#5Vince claims he stopped at the second-floor bathroom before evacuating.
#6A neighbor's doorbell camera recorded someone matching Vince's description entering the building's west entrance at 2:18 PM. The west entrance is closest to the vault.
#7The vault was unlocked during business hours — it relies on security staff presence, not a lock, during the day.
#8Hans (security) was the first to reach the parking lot at 2:17 PM. He left his post at the vault when the alarm sounded.
#9Rhea and Vince were seen having lunch together earlier that day.