The actress, who had impressed critics with her short scene in "Baby", will once again play a special agent in the film, being produced by Pandey.
Akshay Kumar and Manoj Bajpayee will have pivotal roles in the film, to be directed by Shivam Nair.
Taapsee, 29, will have to undergo intense training for her role as it will have several stunts. The movie will begin shooting in Mumbai from end of September.
"It's almost too good to believe that I'm getting to play title role in my career so early. I was told about this film almost an year back but I never believed it. Now finally it's happening and I am ready to get trained in some intensive martial art form for an out and out action thriller," Taapsee said.
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