Radhika Apte will join Castle star Stana Katic and Equity actor Sarah Megan Thomas in an untitled female-driven World War II spy drama where she features as Noor Inayat Khan.

The principal photography for the drama will start in the spring. Linus Roache and Rossif Sutherland have also been cast in the project, based on the real-life spies in Winston Churchill's 'secret army'.

The film centers on British intelligence officer Vera Atkins, played by Katic, and two of the women she sends to France as spies, Virginia Hall (Sarah) and Noor Inayat Khan (Radhika). 

Atkins is a crafty recruiter with a secret of her own. Hall is a daring American with a wooden leg who was the first female field agent and ultimately the spy the Nazi's dubbed "the most dangerous of all," and Khan is a pacifist of Indian descent who was the first female wireless operator. These civilian women form a sisterhood while engaged in missions to turn the tide of the war.

Thomas wrote the screenplay of the film, which will be directed by Lydia Dean Pilcher.