
As a sci-fi critic, I’ve noticed time travel doesn’t always need to be the main focus of a show to actually appear. Take , for example – they threw their characters into the past and future during season five. Of course, is a franchise that practically pioneered time travel on TV, all the way back in its early days with an episode called “Naked Time.” And they’ve kept returning to it ever since, both in the various series and the films. But when a show builds its entire concept around time travel, that’s a different beast entirely – it raises the stakes for the audience. Both approaches work, and honestly, they’ve given us some of the most compelling sci-fi we’ve seen in recent years.