The Investigation Discovery channel will premiere an episode of “Deadly Devotion” focusing on the deaths of Tiffany York and Michael Roark at 9 tonight, with a repeat at midnight. Investigation Discovery is on Hinesville cable channel 111, or high-definition channel 387. This episode takes a look at the events surrounding the deaths of York and Roark in December 2011 in Long County by a militia group known as F.E.A.R. (Forever Enduring Always Ready), which Roark was a member of.