"True Detective" season 1 episode 4 "Who Goes There" airs on Sunday at 9 p.m. on HBO. If you can't watch the latest episode of HBO's newest drama on television, you can watch the show online on HBO Go.

At the end of episode 2, we see the discovery of a burned out church with a picture of the murder scene drawn on the walls. In episode 3, Cohle and Hart track down the owner of the church, evangelical preacher Joel Theriot, who remember seeing the murder victim, Dora Lange, with a tall man with scarring on his face. They begin going through the task of interrogations and investigating the murder as the pressure stays on them to get something before the case is given to the new task force created by a powerful religious figure in the community.

Cohle begins to go through older case files to find any link between murders and/or victims. He finds a possible link to a previous "accident" of a girl who drown. She had the same weird marks on her and was on drugs at the time of her drowning. They discover that the man the second victim ran off with, Reggie Ledoux, was a cellmate of Charlie Lange, the ex-husband of the first victim. The episode ended with a man in white underwear walking with a machete with a face mask on his face and Cohle and Hart going to pick up Ledoux.

The relationship between Hart and Cohle takes a major hit as Hart comes home to find Cohle at his house with his family, including his wife, and mowed his front yard. Hart begins to think that Cohle is trying to move in on his wife and confronts him about it. The problems between Hart and his wife continues also as Maggie attempts to set up Cohle with a friend of hers. While out on a double date, Hart sees his mistress Lisa out on a date with someone else which resulted in him showing up at Lisa's apartment and roughing the guy up.

"True Detective" season 1 episode 4 "Who Goes There" airs on Sunday at 9 p.m. on HBO. If you can't watch the latest episode on television, you can watch the show online on HBO Go. Check out a preview of "True Detective" season 1 episode 4 below.