Lost in Time

S1 E6: After a huge explosion destroys Sealab, Stormy and Dr. Quinn are mysteriously transported fifteen minutes into the past, which puts them in a position to save Sealab from being destroyed in the first place. But Captain Murphy imprisons them, assuming they are doppelgangers. And so Sealab is destroyed by another huge explosion, which then transports another Stormy and Dr. Quinn fifteen minutes into the past, and so on, and so on...