Help! We Have Strange Powers! (Goosebumps Horrorland, Bk. 10)

Jilly and her twin brother, Jackson, are startled when they suddenly discover they can read each other's thoughts. But that's not all. They can read other people's thoughts, too! Their strange new powers are exciting ... at first. But soon they discover that somebody else knows their secret. Somebody who will stop at nothing to control their powers...