Case #8: The Exam Leak That Left No Footprints

🕵️‍♂️ It's the Case of the Week series! We need your help to solve this case! The Exam Leak That Left No Footprints A prestigious high school faced a crisis when photos of final exam papers appeared online at 11:48 PM , hours before the test. The papers were stored inside a locked classroom . Only two people had keys: Mr. Adams , the exam teacher Ms. Lee , the head of department Security confirmed: No doors opened overnight No alarms triggered No forced entry Both teachers denied entering the classroom that night. Yet the photos were real and taken inside the room . ⏸ Pause & Think If no one entered, how were the exam papers photographed? ✅ The Solution The door was never opened, but the window was . Earlier that afternoon, Ms. Lee asked to briefly review the papers and placed them on a desk near an openable window . The windows were frosted, blocking clear views; but a phone camera could still be slipped inside. A photo could be taken from ou...

The Night Shift Alibi - Can You Solve This Riddle?

🕵️ The Night Shift Alibi


🔍 Case

A late-night robbery occurred at a warehouse at 2:30 AM.
Three employees were questioned:

Adam said:
“I was in the security office checking the camera feeds all night.”

Bella said:
“I was organizing inventory in Storage Room B. I never left.”

Chris said:
“I was on my break in the staff lounge, asleep on the couch.”

Security footage showed:

  • Adam entered the security office at 1:50 AM

  • Bella entered Storage Room B at 1:55 AM

  • Chris entered the staff lounge at 2:00 AM

No footage showed anyone leaving any of these rooms before 3:00 AM.

However, the robbery did happen, and investigators arrested one of them.


🤔⏸ Pause and Think

Who committed the robbery, and how did investigators know?


✅ Solution

🔍 Click to Reveal Solution

Adam was the culprit. 

The cameras only recorded entries, not continuous presence. Adam claimed he was checking the camera feeds all night, but if he truly stayed inside, the robbery could not have occurred without appearing on the cameras. The person controlling the cameras could disable or loop footage, allowing them to leave unnoticed. 

 Only Adam had access to the security system, making him the only one who could commit the robbery.


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