The 30-year-old unsolved murder of a woman is given a second look at the behest of her now-adult children; and the rookie detective re-investigating the case discovers an overlooked clue that unlocks a family secret.
The 1988 murders of racing legend Mickey Thompson and his wife, Trudy, are examined. Although investigators had a prime suspect early on, it took almost two decades before they built a case strong enough to put the killer behind bars.
The 1992 murder of a convenience-store clerk on a snowy Nova Scotia night leaves few clues for investigators. Eight years later, however, they mount an elaborate scheme to elicit a confession from the suspected killer, whose DNA they recovered from a cigarette butt.