If you’re watching anything other The Flash and DC’s Legends of Tomorrow tonight, you’re doing TV wrong. Tonight is the final 2 hours of the 4 show crossover which began last night. To catch you up, as Barry & Iris went to say “I do,” Nazi versions of Green Arrow (Dark Arrow) and Supergirl (Overgirl), both from Earth-X (the 53rd Earth no one ever visits), along with Earth 1’s Reverse Flash (Eobard Thawne wearing his Harrison Wells face) crash the nuptials with their Earth-X Nazi SS henchmen and cause all sorts of havoc. Their aim is to kidnap Supergirl so she can (unwillingly) donate her heart to Overgirl who is dying from too much sun radiation. Also, maybe, they want to conquer our Earth while they’re here for … the Fatherland. Also, Felicity told Oliver she doesn’t believe in marriage and doesn’t want to marry him. Oliver is … not handling this well.
Now you’re caught up, so watch the conclusion tonight! Here is what else is on TV.