FILE No.136Unsolved
At a company on the top floor of a 20-story building, a safe was broken into at night. Checking the elevator logs for the night shows it never stopped on the 20th floor. The first-floor entrance was locked, and the guard did not see a single person enter from outside during the night.
The only people left in the building were overtime workers of the company on the 19th floor. The emergency stairs are built so that the doors on each landing open from the inside.
How did the culprit get up to the 20th floor?
If you get stuck, open the hints one at a time, in order.
What does the elevator log record?
Who was inside the building at night?
Besides the elevator, what is another way to the upper floor?
How did the culprit get up to the 20th floor?
Choose the answer closest to the truth.
Went up one floor from the 19th by the emergency stairs
The answer is "Went up one floor from the 19th by the emergency stairs."
The elevator did not stop on the 20th floor, and no one came in from outside. The only people in the building were the overtime workers on the 19th floor.
By the emergency stairs, one can go to an upper floor without leaving a record. A rope from the roof does not work, since there is no mention of an entrance to the roof.
Because you think "no elevator record means no one went up."
The cases on this site are fictional puzzles created for entertainment. Any resemblance to real people, organizations or events is coincidental.
© Unsolved Files
