Trailer for new Supergirl, The Flash, Arrow, Legends of Tomorrow crossover 'Crisis on Earth-X'
Forget Justice League, it's The CW where the big DC crossovers really excel. After last year's fun Invasion! storyline, the network is teaming up Supergirl, The Flash, Arrow and Legends of Tomorrow for a four-part crossover story that will see Barry and Iris's wedding interrupted by an invasion of evil counterparts from a mysterious 53rd Earth ruled by Nazis known as Earth X.
Seeing out favourite heroes pitted against their evil counterparts is always going to be fun and it looks as if The CW are going for another win in this latest adventure that will span the seventh episode of each show.
Supergirl, The Flash, Arrow and Legends of Tomorrow will air their crossover episodes here on Sky 1 in a couple of weeks and Robert Turnbull, Steven Slatter and Baz Greenland will be on hand to review every minute of it.