The CW have released the descriptions of season finale’s for both The Flash and Supernatural, both can be read down below respectively! And it does seem that everything is coming to point of stupendous awesomeness!
“Fast Enough” – (8:00-9:00 p.m. ET)
EPIC SEASON FINALE; VICTOR GARBER AND ROBBIE AMELL GUEST STAR — Wells (Tom Cavanagh) presents Barry (Grant Gustin) with a life-changing choice. Dr. Martin Stein (guest star Victor Garber) and Ronnie Raymond (guest star Robbie Amell) return to help the S.T.A.R. Labs team with this final fight. Dermott Downs directed the episode with story by Greg Berlanti & Andrew Kreisberg and teleplay by Gabrielle Stanton & Andrew Kreisberg.
“Brother’s Keeper” – (9:00-10:00 p.m. ET)
SUPERNATURAL SEASON FINALE – Dean (Jensen Ackles) makes a shocking decision regarding the Mark of Cain that would change not only his life, but Sam’s (Jared Padaleck) too. Meanwhile, Crowley (Mark Sheppard) and Rowena (guest star Ruth Connell) face off and Castiel (Misha Collins) gets caught in the middle. Phil Sgriccia directed this episode written by Jeremy Carver (#1022). Original airdate 5/20/2015.
Extra Tidbit:
Variety is reporting that The CW is ready a first look trailer for the spinoff series, rumored to be titled Legends of Tomorrow, to debut during their upfronts on May 14.
The spinoff series will feature characters from both the The Flash and Arrow – including Captain Cold (Wentworth Miller), Dr. Martin Stein (Victor Garber), Heat Wave (Dominic Purcell), Ray Palmer (Brandon Routh), and Sara Lance (Caity Lotz), as well as newcomers Hawkgirl (Ciara Renée) and Rip Hunter (Arthur Duvall).
If the series is picked up, you would likely see it debut in the fall.