The 1980s: The Deadliest Decade

Thirty-one-year-old violinist Helen Mintiks goes missing during a performance at the Metropolitan Opera House, then her naked corpse is discovered in an air shaft at the opera house.

Fifteen-year-old cheerleader Kirsten Costas is stabbed to death in a California suburb, and a teenage girl is seen fleeing the scene; as months pass without an arrest, the police are stumped.

Vaudeville producer Roy Radin's bullet-riddled body is found in a canyon in 1983; police attempt to determine if he was the victim of a vicious drug cartel or a movie deal gone wrong.

Thirty-one-year-old violinist Helen Mintiks goes missing during a performance at the Metropolitan Opera House, then her naked corpse is discovered in an air shaft at the opera house.

In Wylie, Texas, young teacher Betty Gore is hacked to death on Friday the 13th, causing investigators to wonder whether a copycat killer is trying to create his own real-life ``slasher`` film.

In Libertyville, Ill., a wealthy couple is shot dead while in bed; shocked townspeople ask whether they fell victim to a robbery or to dark secrets harbored by a family member.

Fifteen-year-old cheerleader Kirsten Costas is stabbed to death in a California suburb, and a teenage girl is seen fleeing the scene; as months pass without an arrest, the police are stumped.

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