The story is centered on Letty Raines (Dockery), an ex-con recently released for Good Behavior who's newly out of a job after having been fired from a janitorial job in a dive for refusing to sleep with her boss.
She decides to resort back to a con in order to start making a living and during one in a hotel, she overhears a man paying a contract killer, Javier Pereira (Botto) to kill his wife, and decides to thwart the killing.
In a surprising turn of events, Letty and Javier end up starting to cross paths and eventually grow to care for each other, while Letty tries to turn her life around in order to gain custody of her 11-year-old son Jacob.
The show was cancelled after two seasons on December 17, 2017.
Good Behavior provides examples of the following tropes:
- Abusive Parents: Javier's father, who treats Javier like a monster ever since a tragic accident when he was a kid that resulted in the death of his younger brother Santino, and feels outright vindicated when he reveals Javier's actual job during a tense (because of him) family dinner, resulting in Ava outright refusing to see Javier again.
- Adaptational Badass: Javier is able to get rid of his victim in the pilot much more easily than his book counterpart, who ends up tied up and tortured, and is only saved when Letty comes back to check if Sheila is alive and saves him, killing the woman.
- Adaptation Name Change: Letty Dobesh from the novel becomes Letty Raines in the show.
- Black Sheep: Javier, to his father.
- Call-Back: Episode 4 of season 1 ends with Javier coming to pick up Letty in front of the bank in her hometown. Episode 4 of season 2 ends with Letty coming to pick up Javier in the very same place.
- Christmas Episode: "Because I'm Mrs. Claus" from season 2.
- Dark and Troubled Past: Both Javier and Letty have a pretty damn dark past.
- Gray and Gray Morality: Javier is a contract killer (although one with a code of honor of sorts) and Letty's a thief, and every single character around them is a shade of grey, apart from Jacob. And Rob.
- Idiosyncratic Episode Naming: Every episode is named after a line from its dialogue.
- Indy Ploy: Letty and Javier have a whole conversation on this. Javier always plans ahead and thinks things through and prepares answers for questions anyone might ask while Letty always makes it up as she goes along because she really is that good at thinking on her feet. As the story progresses, the two work in a more Xanatos Speed Chessy way.
- Master of Disguise: Letty uses elaborate outfits, sunglasses, make up and her high quality wigs to make herself pretty much unrecognizable when stealing stuff.
- Race Lift: Javier's counterpart in the Letty Dobesh short story that the pilot is based on is a white man named Arnold.