Originally aired: December 21, 1969 on ABC
Writer: William Welch
Director: Harry Harris
Show Stars: Don Marshall (Dan Erickson), Deanna Lund (Valerie Ames Scott), Heather Young (I) (Betty Hamilton), Gary Conway (Captain Steve Burton), Stefan Arngrim (Barry Lockridge), Don Matheson (Mark Wilson), Kurt Kasznar (Commander Alexander B. Fitzhugh)
Guest Stars: John Milford (Ranger Wilson) , Mort Mills (Constable) , William Bassett (Ranger Jack) , June Dayton (Mrs. Perkins) , Pete Kellett (Guard) , Robert Adler (Villager Sloacum) , William Benedict (Villager Peabody)
Production Code: 4715
Barry and Fitzhugh find a space pod (left by the time travellers from "A Place Called Earth"), unaware that two giant Rangers have also found it and are using it as a lure. Fitzhugh cons Dan into repairing it, but Steve and Mark find out. When the giants close in, Steve and Fitzhugh accidentally lift off and find themselves on a unalterable course back to Earth, through a space warp.
The two men arrive on Earth, but in 1900. They are arrested by the citizens, who aren't sure what to make of them. They manage to escape and get back to the time machine/space pod. Dan, Barry, and Valerie have all been captured, but Mark has managed to decipher the machine's owners' manual. Steve and Fitzhugh are in radio contact, and Mark shows them how to "stop time" to try and recover the key for the machine, taken by the villagers. They have only a limited amount of "frozen time" before they burn up themselves.
Steve grabs an unwitting Fitzhugh, who wants to stay and use his knowledge of the future, and they just manage to escape. The pod leaves 1900 Earth, time unfreezing when they depart. They arrive back in the Land of the Giants, and freeze time to stop the giants and free the others. They are forced to send the pod off on automatic to unfreeze time, depriving them of their means of escape.