Travis Marks and Wes Mitchell have a seven-year track record as the Los Angeles Police Department's best detectives in the Robbery-Homicide Division. Since their constant bickering is interfering with work, their new-age captain sends them to couples' therapy. Wes is a former lawyer turned cop who sacrificed his marriage become one. Travis is a former juvenile delinquent and maverick ladies man who was has a fear of abandonment, commitment and intimacy. We soon learn that a successful partnership doesn't mean you have to like the same things; you just have to hate the same things.
When the ex-addict son of a federal judge is murdered, Wes and Travis have to work through their differences to track down the killer and put the right man behind bars.
Wes and Travis get a surprise when they learn that Dr. Ryan will be riding along with them for a full day. It's news that annoys Wes, who sees the interference as counter productive. Travis, on the other hand, sees the ride along as an opportunity to learn a little more about Dr. Ryan – mainly, if she's single.
Meanwhile, Travis and Wes investigate a suicide at a local hotel, but the seemingly open and shut case is complicated by the discovery of two hundred thousand dollars and a bloody earring at the scene. However, the real surprise comes when the detectives notify the husband of the deceased: it seems the victim, one Justine Winfield, is actually alive and well.
Digging deeper, Travis and Wes soon uncover a tangled web involving identity theft, failing marriages, and an accountant who isn't as adept at hiding his indiscretions as he thinks he is. The detectives soon learn that the answer was right in front of them the whole time, but that may not be enough to save Justine Winfield from becoming a victim for a second time in this complicated case.
Wes and Travis investigate the murder of a woman whose death could be linked to her involvement in a dating website. During their investigation, Wes discovers that his ex-wife has a profile on the same site and has begun dating again.
The return of Travis' ex-partner causes a rift between the guys after they are placed on a special task force with the Beverly Hills Police Department, assigned to stop a crime ring focused on stealing high end cars.
The value/danger of truth versus secrecy is explored when Wes and Travis investigate a slew of home invasion robberies committed by a team of masked bandits whose leader just might be one of Travis' foster brothers.
Feeling the pressure of reaching a milestone on the job, Wes and Travis start to suffer from performance anxiety while on the hunt for a pair of criminals emulating the famous Bonnie and Clyde.
In therapy, Wes and Travis are given the exercise of "role play" by Dr. Ryan. Although living in each other's shoes tests their partnership more than usual, it ultimately leads to them solving the case of a woman who was strangled to death.
When a fellow officer is shot in a gang-related shooting, Wes and Travis investigate the crime while taking on the responsibility of caring for their injured colleague's K-9 dog.
When Wes and Travis suspect a crime novelist of helping a criminal mastermind escape prison, they are forced to "live together" while staking out the apartment belonging to their subject who's far too attached to the stories she creates.
Wes and Travis' loyalties are at odds as the mentors who brought them each up the ranks are called in to consult on a high-stakes drug related murder. Seeing each other's strengths and flaws magnified in their mentors, Wes and Travis come away with a new appreciation for one another.
Wes makes the mistake of confiding in Travis that he's been having erotic dreams of Dr. Ryan. The admission quickly takes a back seat to the fact that her fiance may know more than he's letting on about a dead body that's been discovered at his construction site.
Wes and Travis try to work their way back into the good graces of Dr. Ryan and their therapy group by finally agreeing to tell the whole story of what landed them there in the first place.