Cast
- Michael RennieKlaatu / Mr. Carpenter
- Patricia NealHelen Benson
- Billy GrayBobby Benson
- Sam JaffeProf. Jacob Barnhardt
- Hugh MarloweTom Stevens
- Lock MartinGort
- Freeman LuskGeneral Cutler
- Edith EvansonMrs. Crockett (uncredited)
- Frank ConroyMr. Harley
- Frances BavierMrs. Barley
More like this
