The father of Channon Christian made a vow Friday to Lemaricus Davidson, the convicted ringleader in her kidnapping, rape, torture and murder. "I will do everything in my power to see that they stick that needle in you as soon as possible," Gary Christian said during Davidson's second sentencing hearing. Davidson is already under two death sentences for the 2007 murders of Christian, a 21-year-old University of Tennessee senior, and her boyfriend, Christopher Newsom, 23. He was back in Knox County Criminal Court to be sentenced on the other charges related to the crimes.