The Invisible Boy (aka S.O.S Spaceship) is a 1957 black and white American science fiction film from Metro-Goldwyn Mayer, produced by Nicholas Nayfack, directed by Herman Hoffman, and starring Richard Eyer and Philip Abbott.

It is the second film appearance of Robby the Robot, the science fiction character who "stole the show" in Forbidden Planet (1956),[2] also released by Metro-Goldwyn-Mayer.

At first Timmie uses his invisibility to play simple pranks on his parents and others, but the mood soon changes when it becomes clear that the supercomputer is independent, ingenious, and evil.

The supercomputer takes Timmie captive aboard the rocket; the army tries to stop Robby, but all of their artillery and weapons have no effect on him.

Dr. Merrinoe tells Timmie and Robby to remain on board the ship as it has enough supplies for him to last a year.