Penny drove the roadster through and waited until Susan had closed the door behind her. Through a plateglass window the girls could now see the street. But it took them some time to locate another unlocked door which permitted them to escape.
Once safely out of the building, they pulled up at the side of the road to take note of their surroundings. At first they could not imagine where they were.
"Why, this must be Arlington Avenue," Penny decided. "We're several hundred feet lower than we were when we left that dead-end street on the hilltop!"
"What a clever means for a crook to escape a police chase!"
"Yes, isn't it? I'm almost certain the place has been used by the Molberg gang."
"Then we can't get away from here too quick," Susan declared nervously.
Penny laughed.
"We're safe enough now. Besides, I imagine this escape is never used except in an emergency—probably only when the police are hot on the trail."
Susan glanced at her watch.
"It's after ten o'clock and I promised mother I'd be back at nine."