In the second-season opener, the squad is plunged into a case involving the death of an admired police officer who may have been involved with a white supremacist group. The case hits home for Dwight, who relates to the son of the officer left behind. It also introduces Dwight to Claire Ryan (guest star Beau Garrett from TRON: Legacy), a tough investigator from Internal Affairs. Meanwhile, Rice starts riding Whitehead about taking the lieutenant's exam, but her reasons for wanting him to pass aren't exactly a vote of confidence.

A despondent father comes to Dwight to help search for his missing daughter. When it appears she may have been the victim of foul play, suspicion immediately falls on her abusive husband. Lt. Rice finds herself left out of a big piece of family news, and Whitehead goes to a surprising source when he needs to brush up his firearm skills.

Dwight and Whitehead are on the case of a reported missing person, but they are shocked to discover that a nun may be their prime suspect. And when Sutton discovers an abandoned baby in his car, he turns to Dwight’s mom, Paula Ann, to teach him baby basics.

When the Landmark Movie Theater, a beloved Memphis attraction, mysteriously burns down, Rice decides to sharpen her detective skills by working the case under Whitehead. Meanwhile, Dwight and Paula drive to New Orleans to talk to the man who shot Dwight’s father. Dwight is determined to put to rest his suspicions that his father may have been a dirty cop.

Paula calls on Dwight to help one of his oldest friends, who has been arrested in a case involving three gunmen who robbed a party boat. Dwight’s investigation brings him face to face with an old flame and gives him a chance to perform with one of his old band members from his high school days.

Dwight and Whitehead search for a body that goes missing from a funeral.

Dwight and Whitehead are called in when a man takes hostages at a local bank; Tony breaks up with Paula Ann.

Dwight and Whitehead visit a Southern family from Whitehead's past; Lt. Rice, Davey and Greenback must help identify a man found in jail.

Dwight must keep a pair of feuding families from shedding more blood when one of their relatives is found dead; Davey and Greenback discover that Dwight has a new girlfriend.