Prankster of Prime Time by Martin Pasko
After being released from prison, the evil Prankster takes his trickster talents to TV. As the host of a new show, he recruits teenagers to perform practical jokes for a television audience. One of his many fans is teenage reporter Jimmy Olsen. As Jimmy goes undercover to discover the secret of the show's success, little does he know, he's putting himself in danger. Can Superman save his friend before it's too late?