In the Pines

The team investigates the suffocating death of a wilderness guide. Meanwhile, Vic's husband, Sean, shows Walt a picture given to him of her and Walt entering a motel room together. What bothers Sean the most about it was Ed Gorski sent it with a strange number written on the back. Vic tells Walt that the number was that of Ed's Philadelphia apartment in which they used to have sex. Elsewhere, Branch conducts an experiment by clipping his hair and dripping his blood on an animal carcass and setting it on fire. His DNA from the ashes proves David Ridges could've done the same, is still alive, and assaulted him. Branch abducts a peyote dealer from the reservation for future questioning. Also, Walt posts pictures on his office wall of all the people who might harbor a grudge enough to have killed his wife.