• Kids have adventures back and forth in time. The show had flaws in some ways. In spite of the fact a respectable name is credited as scientific advisor, and a legitimate Scientist Man prefaces several episodes assuring us it's all plausible and trying to explain how it might work, I never did quite get the hang of the rules, and several times it's suggested that they're in effect only hallucinating, which would lower the stakes if true but is surely contradicted by other things. The overall story arc is fairly clearly being made up as they go, and without the slickness with which some modern shows do this, and the ending breezily retcons an early part in a way that made no sense to me.

    But it's very entertaining and just has a certain something about it, perhaps just the charisma of the leads, in particular the kids and Dennis Quilley as the machiavellian Traynor, and some very good scripts, and it fully deserves its enduring cult status. The parts revolving around the children encountering their future selves and not much liking how they've turned out are especially great. There are some good twists and cliffhangers, images that stay with you and much food for thought, and it gets eerily apocalyptic at one point in a way I've rarely come across. Among other highlights is a turn by CJ out of Reginald Perrin as a genuinely chilling and intimidating mad scientist that has to be seen to be believed.