The Time Tunnel - Season 1 - Eps 24: Chase Through Time
The guys arrive in Arizona, 1547, as a technician named Niman kills a scientist. After a shootout, he flees into the Tunnel. Niman is a spy who has planted a nuclear device in the complex. The guys need to find Niman to get him to reveal the location of the bomb. They lure him in with a fire but he slips, and the Project transfer Doug and Tony after him to 1,000,000 A.D. Niman is already there and has established himself with the ruling clique. The guys get the info on the detonation time, bypass a force field, and with the aid of a local female ""defective"" manage to get to Niman. The Project transfers everyone, including two of the future-types, back to 1,000,000 B.C. After some running around from dinosaurs, they rescue Niman from a quicksand pit in return for the location of the bomb. The head alien eventually comes around and forces Niman to give the location of the bomb which they defuse. Everyone ends up in a giant bee hive and the Project gets everyone but Niman out.
About The Time Tunnel

Title: The Time Tunnel
First Air Date: 1966-09-09
Last Air Date: 1967-04-07
Status: Ended
Rating: 7.602/10 (from 171 votes)
Language: EN
Seasons: 2
Total Episodes: 30
Network: ABC
Genres: Action & Adventure, Sci-Fi & Fantasy, Drama
Production Companies: Irwin Allen Productions, 20th Century Fox Television, ABC, Kent Productions
Synopsis
The Time Tunnel is a 1966–1967 U.S. color science fiction TV series, written around a theme of time travel adventure. The show was creator-producer Irwin Allen's third science fiction television series, released by 20th Century Fox and broadcast on ABC. The show ran for one season of 30 episodes. Reruns are viewable on cable and by internet streaming. A pilot for a new series was produced in 2002, although it was not picked up.
Cast

James Darren
Tony Newman

Robert Colbert
Doug Phillipps

Whit Bissell
General Heywood Kirk

Lee Meriwether
Dr. Ann McGregor

John Zaremba
Dr. Raymond Swain