Watch the Full Length Trailer for the ARROW, FLASH, SUPERGIRL and LEGENDS OF TOMORROW Crossover Event

It's almost upon us!

The CW's epic 4-show crossover event including ARROW, THE FLASH, SUPERGIRL and LEGENDS OF TOMORROW begins with SUPERGIRL on November 28 and here's the first full length trailer...

We will have coverage on this big crossover with each of our beat writers covering their respective episode assignment and then we'll put together a collected review post with all their opinions on the entire, epic event.