Oklahoma

Karen Silkwood, a 28-year-old plutonium plant worker in Oklahoma, died in a car crash in November 1974 while driving to meet a journalist with evidence of unsafe conditions. Fifty years later, a new ABC News podcast is reopening questions about her death with newly discovered investigative tapes and accident reconstruction evidence.

Richard Lee McNair, a former U.S. Air Force sergeant convicted of murder, escaped from custody three times between 1988 and 2006 using increasingly sophisticated methods—from lip balm to an ingeniously constructed escape pod—evading recapture for months each time.

Holly Marie Clouse was found alive in June 2022 at age 42, more than four decades after her parents were murdered and she was left at a church in Yuma, Arizona. The discovery solved one of the most perplexing cold cases in American true crime: the identity of 'Baby Holly,' whose parents' killers remain unknown.

On April 19, 1995, Timothy McVeigh detonated a truck bomb at the Alfred P. Murrah Federal Building in Oklahoma City, killing 168 people—including 19 children—in what remains the deadliest act of domestic terrorism in U.S. history. Six years later, he was executed by lethal injection.