Vincent nodded, tried to recall what Gretchen and Melody had done that day, and told Cristofer about it in detail.

“Gretchen went to the restroom?” Cristofer asked with a frown.

“Yes, Miss Abrams said that she wanted to go to the restroom. However, it was inconvenient for me to follow her. Besides, at that time, her mother kept talking to me and scolding me, so I didn’t pay much attention to Miss Abrams.”

“Then when did Gretchen come back?” Cristofer asked.

“About half an hour.”

Cristofer then went to the restroom via the route that Gretchen had taken that day and then found another way by which he could get...