Trace of Suspicion

Trace of Suspicion by NBC News comes in at #8, a serialized true crime entry that focuses on a single unresolved case per season, offering the binge-friendly structure that keeps listeners hooked across multiple days. It outperforms #7 Up First from NPR in retention, with a 35% higher completion rate per season, and each episode averages 1.3 million streams in its first week.