FILE - In this July 23, 2012 file photo, James Holmes sits in Arapahoe County District Court in Centennial, Colo. Holmes faces trial starting on April 27, 2015, in the mass shooting in an Aurora, Colo., movie theater that left 12 dead and 70 wounded. (AP Photo/Denver Post, RJ Sangosti, Pool via AP, file)

Holmes trial set to begin

James Holmes acknowledges killing 12 people and wounding 70 more inside the packed theater.