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(Photo : Getty Images/WireImage) [WATCH] Tom Hardy is back for revenge in new ‘Taboo’ trailer

"Peaky Blinders" Season 4 is currently filming and the show has revealed more information as to what fans can expect in the upcoming season. So far, there are going to be new characters in the mix, but the mayhem in the BBC gangster drama is just as intense as ever.

Adrien Brody, Aidan Gillen join cast

Deadline reported that "Game of Thrones" actor Aidan Gillen is joining "Peaky Blinders" Season 4. Brody's and Gillen's characters have not been revealed yet, but creator Steven Knight hinted that Brody was exactly who he had in mind when he created his character.

Who else is returning?

Aside from the main cast, some of the memorable key players of the show will make a comeback. Tom Hardy is returning as Alfie Solomons. Charlotte Riley is also reprising her role as May Carleton, the former lover of Cillian Murphy's Tommy Shelby. Fans last saw her in "Peaky Blinders" Season 2 when Tommy was about to make a decision as to whom he would marry.

What's the "Peaky Blinders" Season 4 plot about?

The "Peaky Blinders" Season 4 plot will likely be set in the 1920s period, particularly the fallout of the 1926 General Strike. Around this time, the country is still in the midst of recovering from the first World War.

With Hardy's return, it can be expected that Alfie and Tommy will clash in the upcoming season as the two were never close friends. According to Express UK, Knight revealed that they wouldn't be able to do the fourth season without Alfie, which means the character will play a key role in the drama this season.

As for Tommy, he will have to face a lot of family drama after what happened in the previous season. Everything has changed for him, and he has to do something to win back his family's trust. 

Is a "Peaky Blinders" movie in the works?

There are rumors that there are plans to make a "Peaky Blinders" movie. According to the show's executive producer Caryn Mandabach, they've had a discussion about it but nothing is final as of yet. A lot of renowned Hollywood stars reportedly want to take part in the project, including actress Julia Roberts.