[gtxvideo vid="q2EwCPZn" playlist="" pid="rkijshg2" thumb="http://player.gtxcel.com/thumbs/q2EwCPZn.jpg" vtitle="Stevenson trial day three”] COLUMBIA, S.C. (WOLO) -- After Troy Stevenson rejected a plea deal Tuesday, day three of the murder trial included witness testimony from investigators to forensic scientists. From two-minutes on the stand…