A body covered in lye is found in a Las Vegas park. Grissom (William L. Petersen) and Sara (Jorja Fox) try to build a case on what is left of the rapidly decomposing corpse, but it isn't easy. Meanwhile, Nick (George Eads) wrestles with an even more baffling mystery: It seems that the body of a hiker has been found in the middle of the desert -- and the victim had died of drowning. ~ Hal Erickson, Rovi