Three Faces of Me

Ira Fishman is having a bad day. First, he wins a lame prize that looks like a camera. When he presses the green button on top, nothing happens. Later, he is shocked to find a boy in his room - an exact double of himself! When he can’t get the new boy to leave, Ira decides to have some fun. He sends Ira number two to school in his place. Not a good idea. The clone is ruining Ira’s life. And now a second clone appears. Ira’s room is getting crowded. How can he get rid of himself?
Stine got a generation hooked on reading - St. Petersburg Times