Katherine appeared on Thursday's edition of "Good Morning America," where she sat down for a one-on-one interview with Michael Strahan about her new thriller Unforgettable and life as a working mom.

Katherine Heigl Chatting to Michael Strahan On Good Morning America

Speaking about the chance to play an 'evil' character, Katherine said "It was fun. I know that sounds strange. There's a weird freedom to playing a woman who is really not a people pleaser, who is not trying to make people happy, who is not bending over backwards for other people's needs. It's all about [her character] Tessa, and what she wants."

Catch Unforgettable when it debuts in theaters on Friday, April 21.