Darting to the door, Penny flung it open. The newsroom was deserted, but she was almost certain she heard footsteps retreating swiftly down the hall.
“Lou, we’re not alone in this building!”
“I thought I heard someone, too.”
The girls ran through the newsroom to the hall, and down the stairway. Three steps from the bottom, Penny suddenly halted. On the service counter of the advertising department lay a man’s grimy felt hat.
“Look at that,” she whispered. “Someone was upstairs!”
“He may still be here, too. Penny, did you leave the entrance door unlocked?”
“I guess so. I don’t remember.”
“A loiterer may have wandered into the building, and then left when we gave chase.”
“Without his hat?”
“It probably was forgotten.”