is a 1986 psychological thriller starring Christian Slater
. Not to be confused with the TV series of the same name or the 2004 movie starring Ashley Judd and Samuel L. Jackson
This film is about Mark Collins (Slater), a psychotic teenager using electronic tricks. He is eavesdropping on his parents' conversations by wiring every room in the house. When a baby sitter appears, Mark starts to torment her with his tricks.