In late-1970s San Antonio, pediatric nurse Jean Jones worked the shift on which an alarming number of infants suffered cardiac arrests and died, a pattern staff grimly nicknamed the death shift.

This episode examines how she injected children with drugs such as heparin and succinylcholine, how hospital administrators quietly restructured their unit rather than report her, and how a cold case task force finally blocked her release.

• The statistical spike in deaths tied to her shift at Bexar County Hospital
• Dr. Ken Copeland detecting heparin in infant Rolando Santos
• The murder of toddler Chelsea McClellan at Dr. Kathleen Holland's clinic
• The 1984 convictions and 99-year prison sentence
• The mandatory-release loophole and the 2020 plea deal over Joshua Sawyer