Calling All Creeps! is the 50th book in the original Goosebumps series.
Synopsis[]
Ricky Beamer is furious when he gets kicked off the school paper. So he decides to play a joke on Natasha, the bossy editor in chief. Just a little joke. Harmless, really. After school one day he sticks a message in the paper. If you're a creep, call Tasha after midnight, it reads. But somehow Ricky's message gets messed up. And now he's getting calls. Strange calls from kids who say they are creeps. Creeps with scaly purple-colored scales and long sharp fangs...