Saoirse Ronan and Cynthia Nixon have joined the drama Stockholm, Pennsylvania for writer/director Nikole Beckwith. This will be Beckwith's first feature film, with shooting scheduled to begin next month in Los Angeles.

Cynthia Nixon plays the grief stricken mother of a kidnapped girl (Saoirse Ronan) who is now free and struggles to acclimate herself to society after being raised by her abductor. The mother goes to great lengths to get closer to her daughter after twenty years of separation, but she finds it difficult to gain the young woman's love and acceptance.

Jason Isaacs was previously cast as the captor, with David Warshofsky portraying the girl's father.

Stockholm, Pennsylvania is an adaptation of Nikole Beckwith's play, with the script landing on the 2012 Black List. The screenplay won the 2012 Nicholl Fellowship after coming through the Sundance Screenwriting Lab. Greg Ammon will produce through his own Fido Features in association with Olympus Pictures, under Leslie Urdang and Dan Halsted.

Saoirse Ronan will next be seen in Mary Queen of Scots and Wes Anderson's The Grand Budapest Hotel. Cynthia Nixon recently wrapped Life Itself, while Jason Isaacs will next be seen in the NBC miniseries adaptation Rosemary's Baby.