Nichols is writing and directing the pic, which also stars Marton Csokas and Jon Bass.
Inspired by documentary “The Loving Story,” the film centers on Richard and Mildred Loving, an interracial couple who married in June 1958. They were arrested, thrown into jail and exiled from the state. For the next nine years, the couple fought for their marriage and the right to return home as a family.
Shannon will play Grey Villet, the LIFE Magazine photographer who shot the iconic images of the Lovings in 1965.
Ged Doherty, Sarah Green, Nancy Buirski, Colin Firth, Peter Saraf and Marc Turtletaub will produce the pic. Brian Kavanaugh-Jones, Jack Turner and Jared Ian Goldman are exec producing the project.
CAA is selling domestic rights, with Wild Bunch handling foreign sales.
The film will mark the fifth collaboration between Shannon and Nichols, who have previously worked together on “Mud” and the upcoming “Midnight Special,” which also stars Edgerton. Shannon can be seen next in “99 Homes” opposite Andrew Garfield. He is repped by CAA.
Kroll can still be seen on FX’s “The League.” He recently appeared in New Line’s “Vacation.” He is repped by WME and Mosaic.