The Flash Goes All Back To The Future In The Extended Season Finale Trailer! Watch HERE!

http://wp.me/p55gzU-9O2

Most shows don't get to time travel until they're going crazy for season five, but The Flash is nothing if not fast!

But is he Fast Enough?

[ Video: DC's Legends Of Tomorrow Trailer! ]

In the ominously titled season finale -- airing Tuesday at 8/7c on The CW -- Barry has to run into the past to try to save his own mother -- but will it cost the life of someone else?

Ch-ch-check out the video (above) to see the emotional extended trailer!

more: http://wp.me/p55gzU-9O2. #ComicBooks, #GrantGustin, #SeasonFinale, #TheCw, #TheFlash, #TimeTravel, #Trailer, #TVNews