It Came From Channel 5

IT CAME FROM CHANNEL 5 (1999, Longman, an imprint of Pearson)
Two high-school girls discover the shocking truth behind the hugely popular children’s TV show, Laszlo the Lizard & Pals. The adventure takes them backstage, into a dressing room closet, and eventually into the outer reaches of the solar system as they try to uncover the truth behind the global popularity of this deceptively innocent children’s TV show.
Illustrated by Carol Pelham-Thorman. Cover by Shaun Tan.