Today, we’re taking some time out of our regularly scheduled programming to share the first episode of “The Coldest Case in Laramie.” In the new series from The Times and Serial, Kim Barker, a Times investigative reporter, digs into the 1985 murder of Shelli Wiley, a young woman who was a few years older than Kim when they both lived in Laramie, Wyoming. The long-unsolved case took a turn in 2016 when the police arrested someone for Shelli’s murder: a former officer named Fred Lamb. The evidence against him seemed solid, but prosecutors, confusingly, dropped the case. They’ve never refiled. How did a case that seemed this open-and-shut fall apart with such a whimper? To find answers, Kim heads back to Laramie and grapples with conflicting memories and dueling narratives. In episode one, Kim starts to call up Shelli’s family members to try to piece together what happened. To listen to all eight parts, visit nytimes.com/laramie.