This TCM Greatest Classic Films Set includes these four great films:Them!Radiation-mutated ants - 12 feet long and capable of lifting tons - become giant problems for James Whitmore, Edmund Gwenn, James Arness and all of Los Angeles. "Fascinating to watch. Them! is taut science fiction" (A.H. Weiler, The New York Times).The Beast From 20,000 FathomsAn A-bomb test in the Arctic awakens a gargantuan prehistoric dinosaur that makes New York City its stomping ground in the movie (from a story by Ray Bradbury and with superb special effects by Ray Harryhausen) that launched a string of Atomic Age creature features.World Without EndHugh Marlowe, Rod Taylor and other Mars-mission astronauts skid on a time warp into a post-apocalyptic future Earth marked by fear, mutant monstrosities and a diminishing group of subterranean survivors. Can these wayfarers from the past preserve our world's future?Satellite In The SkyA stalwartcrew (and a female reporter stowaway) guides a stratospheric jet rocket ship on the first space flight. The mission also involves another first: the outer-space detonation of the feared tritonium bomb. But mechanical failures threaten to trigger disaster. Strap in for suspense!