The window of the teacher's apartment was less than three feet away, and the sash was pulled down a few inches to let in fresh air.
Pepper was not such an acrobat as Andy, but he quickly raised the next window and moved into the teacher's apartment.

In a trice he had secured the new set of teeth, and then he retired as quickly as he had come, leaving both windows as he had found them.
"Now what shall I do with the teeth ?" the cadet asked himself.

He was strongly tempted to tell Jack and Andy of the trick, but decided to keep the matter to himself.
At last another idea came into The Imp's head and after everybody had apparently gone to bed he stole downstairs and entered the assembly room of the school.

He had previously tied the set of teeth to a bit of fishing line having a sinker at the other end.

He now took aim at the central chandelier and by good luck sent the sinker and line whirling around one of the pendants, leaving the set of teeth dangling below a foot or more.
"Won't there be a surprise when they see 'em up there!" he muttered.
"And won't Crabtree have a job getting them down!" "Oh, my, what a thing to do!" came a voice from out of the darkness.
Pepper whirled around quickly, but the speaker had vanished, banging a door after him.
"Who was that ?" was the question Pepper asked himself.