In a career spanning two decades, Abbas-Mustan, the filmmaking duo known for their brand of racy thrillers, have never worked with Amitabh Bachchan. But that's going to change with their next.

It has been learnt that the directors have convinced Big B to feature in their upcoming thriller, which will have an ensemble cast. While speculations are rife about them taking the Racefranchise forward, the brothers' next will be a dark murder mystery, with Bachchan in the lead.

A source close to the development said, "Mr. Bachchan had several script narrations with Abbas-Mustan. He has really liked the premise and is figuring out his schedule to accommodate this film." When contacted, Abbas confirmed the news saying, "It's true, we met Mr. Bachchan and he found the script fantastic. Along with him, there will be four more actors - two male and two female leads. We'll be casting them soon."

When quizzed on Bachchan's role, Mustan revealed, "It's a positive character, he plays a man with several children. Then a murder draws him into an intriguing mystery." Will this film also mark the debut of Abbas' son Mustafa?

"We keep telling him that we are ready to launch him, but he says he doesn't want to start off with us. Mustafa wants to make his own mark without our support," Abbas said.