They teased us before but they released a trailer which clues us in at least a little more on the 4 night crossover event for the CW Super Hero line up of Supergirl, The Flash, Arrow, and Legends Of Tomorrow.

While it doesn’t give us a complete rundown of what will be happening we do see some interesting glimpses of what might be new heros and even returning characters in Deathstroke.  Deathstroke people!  Check it out below.