Amitabh Bachchan, Hrithik Roshan in Dhoom 4?

The two superstars have reportedly been signed for Bollywood's most successful franchise

One of Bollywood's most successful film franchises, the Dhoom series is back with its fourth installment, and this time it promises to be bigger and better!

According to Bollywood Hungama, the action-thriller screenwriter, Vijay Krishna Acharya, has quite a few surprises lined in for the audience. While neither of the Khans have been roped in for the film, megastar Amitabh Bachchan has signed the film.

We already know Big B is good with bikes, as seen here in Muqaddar Ka Sikandar. PHOTO: REDIFF

And much to everyone's surprise, Hrithik Roshan, who played a villain in Dhoom 2 will return in Dhoom 4 as the protagonist. Meanwhile, Abhishek Bachchan, who has remained a part of the franchise since its first film, will be seen again in its fourth instalment.

The previous three Dhoom films. PHOTO: INDICINE.COM

Will Bachchan Sr and Bachchan Jr have a face-off? Will they do another item song together featuring Aishwarya, like Kajra re from Bunty aur Babli? Will John Abraham return to the franchise? We are hoping it happens!

PHOTO: TUMBLR

PHOTO: TUMBLR