According to Variety, Harrison Ford will topline Civil War thriller Manhunt for Walden Media, portraying war hero Col. Everton Conger, leader of the search for Abraham Lincoln's assassin.

Manhunt will be produced by Lawrence Bender; Mike Rich (The Rookie, Finding Forrester) will pen the screenplay.

The project will focus on the tense days after Lincoln's assassination in 1865 and follow the New York Cavalry as it solves the mystery that eventually leads to John Wilkes Booth, uncovering a plot that threatens to plunge the nation back into war. Conger was in command of the troops when they tracked down Booth in a Virginia barn 12 days after Lincoln was shot.

The pic will be based on James L. Swanson's upcoming book "Manhunt: The 12-Day Chase for Lincoln's Killer," an hour-by-hour account of the search for Booth, to be published by William Morrow in February.

Swanson, a Washington, D.C.-based author and attorney, previously wrote about the crime in 2001's "Lincoln's Assassins: Their Trial and Execution."