He kept pressing the doorbell, startling the neighbors on the other side.
Sam opened the door and was surprised to see him again.
"It's you again. Ms. Gladwell went to work."
Christopher turned around in surprise. "Work? What work does she do?"
"I don't know," Sam replied.
Christopher turned around and entered the elevator with a dark face.
After the elevator doors closed, Sam took out her phone and dialed a number.
"Hey, Robbie. I feel like something's wrong with him. I want you to follow him. What do you say?"
In the elevator, Christopher was looking at the numbers while he was telling to the person on the other end of the line, "Find out where Janice works."
Suddenly, the elevator door opened. He put away his mobile phone and was about to walk out when a man bumped into him.
Her phone fell to the ground with a snap. He frowned and was about to pick it up. However, the man picked up the phone first. "I'm sorry."
