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Quinn and Vince get a lead on Nacole's case and learn about another cold case from 2005; solving these cases proves to be a test of patience, but as retirement draws near, the detectives begin to wonder if Nacole's case will ever be solved.

ATL Homicide

Addonis Cunningham: Nacole Smith Part 2

The sexual assault and murder of a 14-year-old girl in southwest Atlanta has been on ice since 1995, but a new lead sends Quinn and Vince hunting for suspects; as the leads once again cool, finding the killer may mean seeking inside help.

Nacole Smith Part 1

Quinn and Vince investigate the death of a man found lying in the leaves with a gunshot wound to his torso, but as they look into it, they learn about a second victim; to find the killer, they'll have to unravel a series of carjackings and stories.

Jonathan Kemp and Joshua Watson

Quinn and Vince are called to investigate the death of man found in a trap house in a suburban neighborhood; while uncovering nicknames and chasing down leads, Vince finds himself in a dangerous standoff to bring in the killer.

Wali Muhammad

While parked in the driveway of a residential home, a man is shot multiple times; to solve this murder, Quinn and Vince need to locate a key witness, solve an East Point cold case, and uncover a plot for revenge.

Alfred Boyd

When a man is found dead after a violent carjacking, a surviving witness describes two suspects; fingerprints and mistaken identity lead the case in different directions; Quinn and Vince try a new tactic to identify the killer.

Casimiro Ybarra

A convenience store clerk is shot multiple times just before closing, but the twists and turns that lead to a break in the case aren't nearly as crazy as what happens after the arrest.

Obiakor Onyemaechi

A mother's plea leads Quinn and Vince to begin investigating a homicide while the victim is still alive, and they must navigate a long trail of lies and misdirects before finally learning the truth.

Harvey Rutherford

Quinn and Vince are called to assist after a well-known Atlanta civil servant is gunned down outside his home; stakes are high as detectives piece together a timeline and chase down a mystery caller.

Barney Simms

After the lead detective is reassigned, Quinn and Vince take over a case involving a man found shot to death inside a vehicle; it takes a village to solve the case as rumors spiral into a violent confrontation.

Henrico Morant

When a carjacking victim succumbs to his injuries a month later, Quinn and Vince must pick up the pieces of a botched robbery investigation; the search for a stolen SUV and a police pursuit lead the detectives to the unlikeliest of suspects.

Veron Rouse

In a first for the detectives, Quinn and Vince must prove a young male who is found dead was actually killed in Atlanta; a bloodied eyewitness, an active kidnapping and a mystery suspect lead them to uncover a tale of deadly, good fun.

Tafari Myers

Veteran Atlanta homicide detectives David Quinn and Vince Velazquez investigate crimes, from high-profile murders to everyday "who-done-its."

S4 E8 | Casimiro Ybarra

E20 | Addonis Cunningham: Nacole Smith Part 2

E19 | Nacole Smith Part 1

E18 | Jonathan Kemp and Joshua Watson

E10 | Wali Muhammad

E9 | Alfred Boyd

E8 | Casimiro Ybarra

E7 | Obiakor Onyemaechi

E6 | Harvey Rutherford

E5 | Barney Simms

E4 | Henrico Morant

E3 | Veron Rouse

E2 | Tafari Myers