Friendly murder
Mary and Ben lived with their 4 friends. One day, Ben came home and found Mary dead on a sofa. He called the police.
The detective arrived and realized that Mary had been killed not so long ago. He interrogated all 4 friends.
- Mia was in the kitchen and said she'd come home 2 hours ago and gone to the kitchen.
- John was reading a book in the garden. He said he hadn't left the place that day.
- Jennifer said she had been swimming in a swimming pool for 3 hours.
- Jane was painting in her room.
The detective asked everyone to show him their hands and found out who lied to him. That person was the murderer. How did Stevens discover the criminal?
