Worlds collide as The CW kicks off its latest DC crossover

Here’s what’s happening in the world of television for Monday, November 27. All times are Eastern.
Top picks
Supergirl (The CW, 8 p.m.) / Arrow (The CW, 9 p.m.), “Crisis On Earth-X, Parts 1 and 2”: The latest DC crossover kicks off tonight on Supergirl, though it’s Barry Allen/The Flash’s nuptials that are interrupted by a new threat—the evil, Earth-X versions of these superheroes. The battle continues in a new episode of Arrow (which airs on special night), before raging into your Tuesday night in episodes of The Flash and DC’s Legends Of Tomorrow. It’s a good thing we’ve assembled our own Justice League of reviewers: Caroline Siede and Allison Shoemaker have you covered tonight, while Scott Von Doviak and Oliver Sava close things out in tomorrow’s two-partner.