Emma goes and asks Thayer about the situation. He explains that he didn't do it and Laurel shouldn't have blamed him.
Still confused, Emma is still trying to find Sutton's killer. She can't think of anyone else who could've done it.
Emma goes home, cleans up all of the candles from Garrett. She then remembers the party at Charlotte's house, she remembers that Ethan who was also at the party disappeared along with Sutton. She takes that into consideration and goes to go ask him about it.
Emma goes to Ethan's house to ask him about everything. He sounds very anxious and keeps avoiding Emma's questions about her sister.
Ethan finally confesses to Emma about killing Sutton. He said he did it with a necklace while he recorded it and put it on Laurel's laptop to frame her.
Emma calls the cops on Ethan and gets him locked up, resolving the murder. She apologizes to Laurel about thinking it was her and everybody comes to good terms.