Michelle Monaghan and Michael Shannon have joined the cast of “Machine Gun Preacher� from Lionsgate alongside Gerard Butler.

The film is being directed by Marc Forster (�Quantum of Solace�) and will start filming this summer.
The project’s script was written by Jason Keller and is based on Childers’ memoir, “Another Man’s War: The True Story of One Man’s Battle to Save Children in the Sudan.�

Butler will be playing the real-life hero Sam Childers, a former biker gang member who became a missionary after finding religion in 1992 and going to Africa. While there, he began working in rescuing displaced and orphaned children from war-torn regions. He and his wife operate the charitable organization Angels of East Africa, the Children’s Village Orphanage in Sudan.

Monaghan is playing Childers’ wife, Lynn, and Shannon is in talks to play a close friend of Childers.