In the second-season premiere, Crews and Reese track a serial killer who's placing victims into numbered trunks around the city. Elsewhere, Ted and Crews look for the surviving daughter of the murdered family from Crews' past.
A dead man found bound to a chair in an empty pool may be a result of gang violence and an underground party circuit. Elsewhere, Reese's father asks Ted for info on Crews' personal investigation, and Crews recruits Jennifer to help with Rachel (Jessy Schram).
A research scientist is discovered frozen solid, and the ensuing murder probe points to an animal-rights group. Elsewhere, Ted asks Crews for a business-school referral.
A student acting as a corrections officer for a university's prison experiment ends up dead. Meanwhile, Crews obsesses over a wiretap recording of Jack Reese.
A man involved in an Internet love triangle turns up dead at a wrecking yard. Elsewhere, Crews uses an old photograph as a clue in his investigation of Jack Reese.
Crews and Reese track an escaped criminal after an earthquake strikes Los Angeles. Elsewhere, Ted is injured in the quake.
The investigation of a woman's murder points to a lottery-winner support group whose members have trouble coping with their sudden windfalls. Elsewhere, Rachel, though mum on her family's murder, connects with Crews.
A murder at a mall on a busy shopping day leaves the detectives scrambling. While hunting the killer, they discover that the body has gone missing. Elsewhere, an FBI agent contacts Crews.
A teacher who only dated cops turns up dead in a seedy neighborhood. Meanwhile, Crews and Jennifer discuss their relationship, and Ted's students keep dropping out of his business class.
A sheriff's deputy is killed on an Indian reservation involved in a turf war over a casino. Elsewhere, Crews goes to a fund-raiser sponsored by a man he believes conspired against him.
A murdered man is buried up to his neck and surrounded by flower petals in a home's backyard. Crews and Reese believe the incident may be related to a cult from the 1970s. Elsewhere, Crews confronts Mickey Rayborn, despite warnings from the FBI.
The murder of three Russians leads the detectives to a Russian mobster (Garret Dillahunt) who may also be linked to the Seybolt murders. Elsewhere, Crews shoots an intruder and Reese reverts to old habits.
Crews and Reese investigate the shooting of a retired NASA pilot, compiling a list of suspects that includes the man's son and business partner. The case takes a turn when they discover the pilot had planned to pay millions to the Russians for a trip to space. Elsewhere, Tidwell hopes to spark Crews' memory of who shot him.
The lead singer of a heavy-metal band is suffocated. Crews and Reese immediately suspect that the band's ousted former front man is involved, but they also take notice of a homeless man who appears to be a devoted groupie. Elsewhere, Crews learns that his dad's wedding has been canceled.
A man who ran a construction scam is found dead in a roofless home and with money shoved in his mouth, so the detectives interview his hoodwinked customers to find suspects. Elsewhere, Crews confronts Rayborn and learns more about the conspiracy against him.
Crews and Stark partner up after Reese receives an offer to join an FBI organized-crime task force. The former partners investigate the murder of a philandering financial adviser and uncover corporate and political corruption.
Crews and Stark investigate the stabbing of a soldier during his leave in Los Angeles. Elsewhere, Mickey Rayborn's security specialist (Helen McCrory) leads Crews to a surprising discovery.
Crews receives an overachieving new partner, Det. Jane Seever (Gabrielle Union). The pair's first case involves the murder of a court reporter who had been pen pals with an imprisoned jewel thief.
Crews and Seever investigate the murder of a coroner, whose coworkers are suspected of the crime. The detectives must solve the case quickly because if a coroner is the culprit, many other cases could be compromised. Elsewhere, Ted tries to make peace with his daughter.
The detectives investigate the murder of a politician. The victim had been working on a handgun ban that had the potential to cost a gun company millions of dollars. Elsewhere, Crews looks into Reese's new duties with the FBI.
In the second-season finale, Crews searches for Reese, who vanished while working with the FBI. He soon discovers that his partner's disappearance is related to the conspiracy that landed him in jail.