John Walsh investigates a whirlwind romance and the accusation that Lamont Stephenson strangled his fiancé and her dog. Callahan Walsh explores claims that Gloria Schulze is a freeloader drunk driver…

John Walsh profiles Mike Bullinger’s secret double life that police believe ended in a triple homicide. Callahan Walsh looks at the case of Tomas Magallon Gonzalez, who allegedly abused his…

John Walsh profiles Juan Lazaro Abrego who is believed to have murdered his ex-girlfriend, a beloved teacher. Callahan Walsh investigates Derek Dean, a St. Louis man accused of shooting a…

John Walsh follows the story of Glen Stark Chambers, who killed his girlfriend and then escaped prison (not once but twice); Callahan Walsh follows Jesus Salazar, a suspect of murder…

John Walsh profiles John Blauvelt, a U.S. Army vet who is accused of waging a lethal war against his young wife. Callahan Walsh looks at Rudy Fernandez, whose teen romance…

Alicia Osibin’s neighbors trusted her, but John Walsh looks at whether she may be responsible for her own mother’s murder. Callahan speaks with Andrea, alleged victim of Frederick McLean’s abuse,…

John Walsh investigates how Eric Jones, the son of a preacher, allegedly turned to murder. Later, Callahan Walsh tries to make sense of how a dispute over a dog could…

John Walsh explores the case of conman Edgardo Perez who allegedly preyed on older men until it turned deadly. Callahan Walsh heads to Boulder where teenage babysitter Chris Deininger confessed…

Luis Frias makes John Walsh’s most-wanted list after allegedly stabbing his common-law wife to death in front of their children; Callahan Walsh explores the case of Harold Butch Knight, who…

John Walsh spotlights freshman Jihad Ramadan, who allegedly introduces a knife to a fistfight that claims a star college student’s life. Later, Callahan Walsh looks for Thayne Smika, who, police…

Roback faces disciplinary action, Alvarez deals with trauma on the job and learns shocking news from home, and Roback and Davis’s money-making scheme doesn’t go as planned.

Roback, Davis, and Petrocelli make their way back to base through treacherous desert. Roback makes a grand gesture to help out Alvarez, complicating things with Durkin. Holloway takes a special…

Roback, Davis, and Alvarez go on a mission to find Qasem. Alvarez makes an unexpected friend. Roback opens up to Durkin, and tries to salvage the fight with Sasquatch.

Roback scrambles to keep a promise. Sasquatch reminds the guys they have unfinished business. Holloway has plans to help Qasem’s village.

A coordinated attack catches the base by surprise. Davis and Roback stumble upon an unusual operation in the Afghan hills. Alvarez helps Hazara.

Col. Austin brings the hammer down hard on Roback, Davis, and Alvarez. Davis brokers the big fight with Sasquatch. Qasem helps Holloway at her medical clinic.

A visiting dignitary arrives on base; Davis seeks a new side hustle as pressure from home becomes unbearable; Durkin and Sasquatch have a fight about their future.

With some of the most decorated doggies ever to set paw on the K-9 combine, records may be broken.

The lineup raises burning questions such as if old can defeat young and if skill can beat experience.

A veteran K9 nicknamed “The Wonder Mutt” figures to be the favorite, but will he be taken out by the younger, hungrier competition? His challengers include a police dog with…

A third generation police K9, and a civilian underdog built for speed are among the pooches who face off in a competition that comes right down to the wire. Who…