Billy smiled. Perfect---he hadn't actually expected that to work! It was still strange to hear his own voice coming from somewhere else, though.

He set off in the direction he'd thought he'd heard his voice. It was up high, wasn't it? Time to check the roofs. He climbed up to one and surveyed all the roofs...there was a chimney or two, one with a weird little dome on top, and a roof a few doors down with an ice cream cone.

He silently crept down the block and checked all three, eventually winding up at the ice cream cone. It would be hard to climb in from here, wouldn't it?

First he knocked, testing for a response. If there was none, he'd climb.