Arrow Season 3 Spoilers: The Flash Set Photos Reveal MAJOR Spoilers About Oliver Queen

The Season 3 finale of the CW's Arrow will be here before you know it, and the Internet is buzzing with some new extremely spoiler-y photos that might actually give away the ending of the season. But the kicker is these photos are not from Arrow; they're from The Flash!

First, a little background. The Season 3 finale of Arrow will air on Wednesday, May 13, while the Season 1 finale of The Flash will air on Tuesday, May 19. So Flash ends after Arrow this year, which means that in terms of the narrative universe, the events of Arrow almost assuredly wrap up before the events of Flash.

Now, for the big news. Grant Gustin News posted some set photos of what could be the season finale of The Flash that reveal some MAJOR spoilers about both shows. In the pictures, we see Barry Allen standing side-by-side with Firestorm (Robbie Amell) and the Arrow (Stephen Amell) facing off against an unmasked Reverse Flash, whom we now know to be Harrison Wells aka Eobard Thawne (Tom Cavanagh).

But the big news for Arrow fans is Oliver's costume. Instead of his trademark green outfit, we see Ollie in a more brown costume similar to what Ra's al Ghul wears. This has fueled speculation that Oliver actually accepts the offer of the Demon's Head to take his place as the leader of the League of Assassins.

Head here to check out the photos.

Until we get to what is sure to be an exciting finale for Arrow, here's the description for next week's new episode, entitled "Public Enemy."

"DONNA SMOAK RETURNS — During an attack on the mayor's office, Ray (Brandon Routh) is critically injured. Felicity (Emily Bett Rickards) is pleasantly surprised when her mother, Donna Smoak (guest star Charlotte Ross), shows up at the hospital to offer her support. With the SCPD out in full force looking for the assailant, Oliver (Stephen Amell) and his team work hard to stay onestep ahead of the police to find the man responsible. However, things come to a head when Ra's al Ghul (guest star Matt Nable) kidnaps Captain Lance (Paul Blackthorne). Dwight Little directed the episode written by Marc Guggenheim & Wendy Mericle."

What do you make of these photos? Let us know in the comments section.