Greatfellas - S2-E10
Trivia: This episode features singer Mel Tormé, playing an alternate version of himself. Mel Tormé is the father of show creator Tracy Tormé.
Trivia: During the intro for the Season 2 episodes, Quinn talks about some of the worlds that they have visited. When he does this, a clip of the episode is played. The first two match up, but the third, he describes as "a world where San Francisco is a maximum security prison" and footage of a different episode is played. It's the footage of the world where a virus has killed most males and the men in the group are kept in a breeding center for repopulation. It may be a little similar, if not for the episode in which San Francisco really is a maximum security prison, which is what one of the characters says verbatim after confusing reactions from the Sliders.
Chosen answer: Remember at first Quinn's timer is working perfectly (it's only because they slide off the ice age world early that it begins to malfunction) & given Quinn's intellect he would have devised a way that he could open a wormhole near him so he wouldn't be trapped on that world for 29 years.