KNOXVILLE — The case against the alleged leader in the torture slaying of a young Knoxville couple went to the jury Tuesday with the defense trying to poke holes in a mountain of circumstantial evidence. Lemaricus Davidson, 28, faced 38 counts including kidnapping, theft, rape and murder in the January 2007 carjacking deaths of University of Tennessee student Channon Christian, 21, and her boyfriend Christopher Newsom, 23. The counts were consolidated from an original 46. The state intends to seek the death penalty if he is convicted. The case has touched a racial nerve because the defendants are black and...