In Mehta's "Water", she plays a widow. "It's a role with a multitude of emotions, and I really found it a challenge," Biswas said.
The planning and research for each role impressed her. "Each of us was made aware of the characters in utmost detail, including the psyche and background. It was a meticulous and well-planned effort," Biswas said.
Another film that Biswas is looking forward to is Deepak Balraj's "Bombay Godfather", in which she plays an 'encounter specialist' in the police.
To help her get a feel of the role, Balraj got Biswas to meet a few police officers.
"I observed that one of the qualities that make women successful in traditionally male-dominated professions is discipline and conviction about work, which I tried to portray in the role," she said.
"It is unlike the loud roles that one would associate a female police officer with; neither is it about displaying physical strength."
According to Biswas, it is rare to get to play characters like the ones she got in "Ek Haseena Thi", "Bhoot" and "Khamoshi".
"There is a dearth of strong woman-oriented roles. That's why I do very few films rather than play indiscriminate character roles, which make little difference in the long run," she said.
"I also have theatre for creative satisfaction until directors like Sanjay Leela Bhansali and Ram Gopal Varma have something interesting for me."