"Mr. Clark," the high school principal called out as she peeked her head into the teacher's classroom while he was packing up at the end of the school day. "I'm going to need you to take over Ms. Lewis's class during your prep period again tomorrow. I still haven't been able to find a sub."
"What about Mrs. Wilton?" he asked.
"I tried her, but she said no," Ms. Johnston shrugged before walking away.
