Dwight and Charlie must keep a pair of feuding families (Murphy's vs Harrison's) from shedding more blood when one of their relatives is found shot; Charlie, Davey and Greenback discover that Dwight has a new girlfriend and invite Her to Dwight's "Surprise" Birthday Party.

A potent storm sweeps in on Memphis and strands Dwight and Whitehead inside a mansion, where a whodunit murder mystery then plays out. Back at the department, the squad tries to identify an enigmatic man who mysteriously slipped into jail.

Dwight and Whitehead hightail it to a local bank, where a man has taken hostages and claims that he's the victim of a scam. As Dwight works the delicate case, he soon unearths deep truths about the alleged scam. Meanwhile, Paula Ann suffers a breakup.

The body of a highly regarded man known for helping at-risk children goes missing during his funeral. Dwight and Whitehead scramble to find the body—yet a very different picture of the supposed model citizen soon begins to take shape.

Dwight goes sleuthing when three gun-toting thieves rob a party boat, but there are ripple effects when the case involves one of Dwight's oldest friends. Fallout from the investigation allows Dwight to reconnect with an ex-flame and perform music with an old bandmate.

When an iconic Memphis movie theater mysteriously burns down, Rice takes the case to smoke out the culprit. Meanwhile, with his mother in tow, Dwight hits the road to New Orleans to speak to his father's killer, hoping any insight will prove that his father was never a dirty cop.

Dwight and Whitehead team up to investigate a missing-persons case, only to be stunned when a nun emerges as the main suspect. Meanwhile, Sutton happens upon an abandoned baby and reaches out to Dwight's mother for a tutorial on basic baby care.

Dwight tries to locate a grief-stricken man's missing daughter---but the hunch is that she was the victim of a crime. Meanwhile, a big family development rocks Rice's world. And Whitehead is under the gun to refine his firearm skills, so he turns to an unlikely source for help.

A slew of safe robberies may be the handiwork of infamous burglars who carried out a crime spree 10 years earlier. Enter an overly enthusiastic accountant (Thomas Lennon), who joins the investigation and promptly falls for Rice. Meanwhile, Whitehead tries to reinvent himself.

The squad delves into the death of a valued police officer, yet evidence suggests the victim may have been involved in shady dealings. Meanwhile, Dwight meets a tenacious internal-affairs investigator (Beau Garrett); and Rice pushes Whitehead to take a lieutenant's exam.