'Good Behavior' is seductive thriller series based on the Letty Dobesh books by Blake Crouch. Good Behavior tells the story of Letty Dobesh (Michelle Dockery), a thief and con artist whose life is always one wrong turn, or one bad decision from implosion - which is exactly how she likes it. Fresh out of prison, Letty tries to stay afloat; reunite with her 10-year-old son, who is currently being raised by her mother Estelle (Lusia Strus); and regularly see her substance-abuse counselor, Christian (Terry Kinney), whose motives for helping her are questionable. Chaos returns to Letty's life when she overhears a hitman (Juan Diego Botto) being hired to kill a man's wife, and sets out to derail the job. She soon finds herself on a collision course with the killer, entangling both of them in a dangerously captivating relationship.

Letty Raines (Dockery) always gets what she wants. She even got back the one thing that had eluded her for so long - her son, Jacob (Nyles Steele). Unfortunately the deal she struck with the FBI to regain custody of her son nearly cost her the love of an assassin named Javier (Botto), the one man who ever truly understood her.

As the second season of Good Behavior opens, Letty has patched things up with Javier and reconciled with her mother, Estelle (Strus), who had long stood in the way of Letty getting custody of Jacob. On the run from FBI Agent Rhonda Lashever (guest star Ann Dowd), Letty, Javier and Jacob are heading for a new life trying to be normal.

The more Letty and Javier try to create a normal life, the more things go awry. Their attempt to build a better future for Jacob soon proves futile when something more dangerous than the FBI catches up with them: the past. The sweet taste of normality slowly fades as Letty goes from bad at being good... to good at being bad.