The Invisible Boy (1957) Family / Science Fiction Directed by Herman Hoffman Cast: Richard Eyer as Timmie Merrinoe  Philip Abbott as Dr. Tom Merrinoe  Diane Brewster as Mary Merrinoe  Harold J. Stone as General Swayne  Robert H. Harris as Professor Frank Allerton  Dennis McCarthy as Col. Macklin  Alexander Lockwood as Arthur Kelvaney  ...