This thirteen-year-old girl claimed that she could smell a rotting body. She fought with her mom when she couldn't stand the smell anymore, and tried to run away from home.
Her neighbor heard the noise and thought that her mother was beating her, and so called the police.
Luke and Selina happened to be right next to the building, and went to the girl's apartment along with another officer.
After knocking on the door and figuring out what happened, Luke looked around the place, deep in thought, then smiled at the girl. "I bet there isn't a body in your apartment."
The girl shook her head hard. "That's not true. I can smell it. Someone definitely hid a body in here. It smells like a corpse."
Luke smiled and said, "Do you want to bet with me?"
After a brief hesitation, the girl nodded. "Okay."
Luke picked up a small metal ball from the desk. It was about one centimeter in diameter and was quite handy.