S1, E3: When the beautiful, young wife of a rich, automobile dealer is assaulted and slain by a pair of drug addicts, Starsky and Hutch find themselves moving at breakneck speed to locate and arrest the killers before the agonized widower takes the law into his own hands in "Texas Longhorn." Driving late at night with his wife, Emma Lou, Texas-born used car tycoon Zack Taylor stops to help two male occupants of a disabled vehicle. Zack is knocked unconscious after getting a look at the men, Chaco and Harris, who assault Emma Lou before taking her life. Investigating the crime, Starsky and Hutch dig through society's lowest elements for clues. They learn that one of the suspects is heavily tattooed and that both are heroin addicts. But the bereaved Zack is also on the trail of the killers and Starsky and Hutch fear the big Texan may lose his own life trying to avenge his beloved Emma Lou.