• The Flash is a CW Network series developed by writer/producers Greg Berlanti, Andrew Kreisberg and Geoff Johns.

The Flash is a CW Network series developed by writer/producers Greg Berlanti, Andrew Kreisberg and Geoff Johns. (Photo : Facebook/The Flash)

New details and possible spoilers for "The Flash" season 3 will feature a new villain in the show and release date of the crossover episode with "Arrow", "Supergirl" and "Legends of Tomorrow".

It seems that new plot details and a possible release date of the four-night crossover episode of "The Flash", "Arrow", "Supergirl" and "Legends of Tomorrow" has been revealed as executive producer Greg Berlanti announced that production is on its way.

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Berlanti told Indiewire that scripts for the four-part crossovers have been finished and now they figuring out how they will execute each scene knowing that four DC comic book shows are lined up. The four-part crossover is scheduled to air on November and the setting will be on Barry Allen/The Flash's (Grant Gustin) hometown of Central City. Berlanti explained that they are telling one cohesive story in the crossover and that "Supergirl" will be involve in the storyline, but will not start there, as it will mainly start in "The Flash" followed by "Arrow" and "Legends of Tomorrow.

"Arrow" star Stephen Amell tweeted a photo featuring the legs of cast members of all four shows such as Gustin, Brandon Routh, Caity Lotz and Melissa Benoist in their superhero costumes.

Several reports revealed that Kara Zor-El/Supergirl (Benoist) will be the main focus of the four-part crossover and Berlanti stated in an interview that all the heroes from all four shows will unite to combat a powerful threat.

Fans are still questioning as to who or what this "unifying threat" could be as Berlanti did not elaborate any further details. With "Legends of Tomorrow" introducing both the Justice Society of America and the Legion of Doom, it seems that the four-part episode will serve as the instrument to make the Legion of Doom a powerful threat or a precursor of something far worse than them, Entertainment Weekly

In other news, writer director Kevin Smith teased a DC villain joining "The Flash" season 3 as he posted a photo on Intagram that he wanted to have Gentleman Ghost in show.

In the DC comics, Gentleman Ghost is the spirit of a 19th Century gentleman thief named Jim Craddock, who became a ghost to commit further crimes. Craddock was originally killed by Nighthawk and is doomed to wander the world as an undead until his killer’s spirit left the mortal plane. However, Nighthawk is a reincarnation of prince Khufu, who is also known as Hawkman and with his power of reincarnation, Craddock's curse will still happen.

The plot of "The Flash" season 3 will feature the "Flashpoint" event after Barry changed the past and created a whole new alternate timeline, changing the relationship of his family and friends.

Barry will face new foes in the shows such as Savitar, Dr. Alchemy and The Rival (Todd Lasance), Mirror Master (Grey Damon), Top (Ashley Rickards) and Magenta (Joey King).

"The Flash" season 3 will premiere on Oct. 4 at 8pm on the CW Network.