"Good Behavior" season 2 finale is just around the corner, and TNT has dropped a sneak peek for all fans.

The clip, titled "You're the Killer", shows Letty (Michelle Dockery) playing a game of "Clue" with Estelle (Lusia Strus), Rob (Joey Kern), and Jacob (Nyles Julian Steele). As the game continues, Jacob tells Letty that she is the killer in the game. Confused, Letty questions Jacob on why she was the murderer. Jacob and Estelle then explained that Letty's character in the game, Miss Scarlet, committed the murder in the conservatory with a rope.

Letty was then asked by Jacob if the mansion Javier (Juan Diego Botto) bought her has a conservatory. Estelle then made a comment, stating that it is better not having the conservatory because Letty will just kill the plants. Estelle then grabs a cactus on the floor and places it on the table.

With this, Letty recalls the time when she was held at gunpoint by Teo (Juan Riedinger) when he discovered Letty's background as a con artist. When Teo became distracted, Letty used a cactus to hit him and proceeded to run to her bag, grab her gun, and shoot him.

After realizing she committed murder, Letty was stunned and held tight to her gun. Unfortunately, an employee who was hired to install the mansion's home security system rushed to the room. As she begged him to leave, Letty accidentally pulled the trigger, killing the other guy as well.

Letty continuously criticizes Javier, her partner, for being a hitman. But, now that she has killed two people, her morals lie on a thin line. "Letty has very definitively said for all the bad things that she does, killing will never be one of them," said co-creator Chad Hodge to Entertainment Weekly. "I've never been in this position, but it feels like it would be realistic for your mind to sort of spin out a little bit."

"Good Behavior" season 2 finale will on Sunday, Dec. 17, at 10 p.m. EST on TNT.