Police in Boston search for a mad bomber trying to extort money from the city.

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.