The conclusion of this multi-part, multi-series “Elseworlds” crossover event has the heroes of Flash, Arrow and Supergirl traveling to Gotham City – the home turf of Batman, of course. Except that, in this particular story line, the Caped Crusader has been missing from Gotham for about three years (the Fox series Gotham has been missing for a while, too, but returns with new episodes in January). So who’s minding the store, and the city? As was revealed last night on Arrow, it’s Ruby Rose as Batwoman (pictured) – a character who wasted no time in befriending Melissa Benoist’s Supergirl. In tonight’s conclusion, a bad guy has been given the power to reshape reality, and twists things to change the identities, fates and powers of almost all the heroes of this comic book-based tale.