Due to The Time Tunnel (1966) being abruptly canceled, the series seems to end with a cliffhanger. There was no "series finale" which would have shown the end of Doug & Tony's adventures and their return home. Since the episode ends with footage from reruns of past episodes (a common practice for Irwin Allen productions such as Lost in Space (1965) during summer break), many viewers and critics have interpreted the conclusion to be that Doug & Tony were stuck in an eternal loop of repeating their 30 filmed experiences for all time, a convenient metaphor for syndication. Viewers with upbeat preferences have pointed out that Doug and Tony's signals are reported to be very strong in this episode, and prefer to assume that after their adventure in the Town of Terror, the two men were retrieved safely to Project Tic Toc headquarters.
Even though the show ended with this episode, the plans for the proposed second season were to have Doug and Tony successfully come home. After the bugs were worked out they then would be able to move though time to fix any anomalies their travels might have caused or use it for various other purposes.