Thomas Merchie, a retired Illinois State Police crime scene analyst, testifies about the blood spatter analysis he conducted during the 2008 death investigation of Brock Branson, Kilynna Blake, Dayan ... more 
Thomas Merchie, a retired Illinois State Police crime scene analyst, testifies about the blood spatter analysis he conducted during the 2008 death investigation of Brock Branson, Kilynna Blake, Dayan Blake and Kenneth Ulve, during the murder trial of Nicholas Sheley in Rock Island, Ill., on Wednesday, May 21, 2014. (AP Photo/The Dispatch, Paul Colletti, Pool) less 
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Associated Press | Photo By The Dispatch, Paul Colletti, Pool
Wed, May 21, 2014 5:39 PM EDT