Cassie, Eddie, Scott, and Winks are constant companions. Cassie has a secret crush on Scott, Winks is a practical joker, and Eddie is the group's scaredy-cat. With Winks leading them, Scott and Cassie tease Eddie mercilessly: the four scare him with an eyeball from the town morgue, and frighten him while he is trying to learn to drive. One night, when they take Scott's parents' car to practice driving illegally, Eddie hits a man and runs him over. Horrified, and too worried about the consequences to do anything responsible, the four friends leave the man for dead by the side of the road.
In the days that follow, the four friends try to hide their guilt, but it appears that someone knows the truth about what they did the corpse! The corpse has disappeared from the morgue, and now he is calling them on the phone and leaving threatening notes on their doorsteps. He even goes so far as to cause a car accident himself when he does his own hit and run, injuring Winks. In the end, Cassie discovers the corpse in the trunk of Eddie's car, and the most terrible practical joke of all is revealed, with Eddie at its helm. Author of more than 80 books of humor, adventure, and mystery for young readers, R.L. Stine has written a suspenseful tale of friendship turned bad.