Sidney Kimmel Entertainment and Charles Segars are ramping up development of action-thriller “The Immaculate,” tapping writer-producer Kamran Pasha to rewrite.

The pic tells the story of an agnostic Secret Service agent assigned to protect a 17-year-old boy who many believe may be the Messiah. Kevin Elders (“Echelon Conspiracy”) wrote the original screenplay.

Sidney Kimmel is producing with Segars. SKE president Jim Tauber and production chief Matt Berenson are exec producing along with Elders’ manager, Barry Perelman.

SKE has wrapped on a pair of upcoming releases: “One for the Money,” starring Katherine Heigl and opening Jan. 24 from Lionsgate, and “Gone,” starring Amanda Seyfried and launching Feb. 24 from Summit.

Segars has a story credit and exec produced both “National Treasure” pics and is developing with Bob Cooper an untitled FBI wedding comedy at Universal as a starring vehicle for Steve Carell.

Pasha has been a writer and producer on NBC’s “Kings,” a producer on NBC’s “Bionic Woman” and a co-producer and writer for Showtime’s “Sleeper Cell.”

Pasha is repped by WME and managed by Jennifer Levine at Untitled.