Modern-day Texas Ranger, Cordell Walker's independent crime-solving methods have their roots in the rugged traditions of the Old West. Walker's closest friend is former Ranger, C.D. Parker, who retired after a knee injury, and now owns "C.D.'s," a Country/Western saloon/restaurant. Rookie Ranger, James "Jimmy" Trivette is an ex-football player who bases his crime-solving methods on reason and uses computers and cellular phones. Alex Cahill is the Assistant DA who shares a mutual attraction with Walker, but often disagrees with his unorthodox approach to law enforcement.

A career officer and his wife work with a police detective to uncover the truth behind their son's disappearance following his return from a tour of duty in Iraq.

A married couple's life is turned upside down when the wife is accused of murdering her boss. Her husband John would spend the next few years trying to get her released, but there's no evidence that negates the evidence against her. When the strain of being separated from her husband and son gets to her, John decides to find a way to break her out.

Constable Benton Fraser, an officer of the Royal Canadian Mounted Police, is attached to the Canadian consulate but works with Chicago Police Department to solve crimes.

In post-Sept. 11 Los Angeles, tensions erupt when the lives of a Brentwood housewife, her district attorney husband, a Persian shopkeeper, two cops, a pair of carjackers and a Korean couple converge during a 36-hour period.