This deep-dive documentary investigates the chilling 2010 cold case of Sherry Black, a beloved grandmother and business owner who was brutally murdered inside her South Salt Lake bookstore, B&W Billiards and Books. For over a decade, the investigation remained one of Utah’s most baffling mysteries, leaving family and detectives with little more than a discarded Armani trench coat and a trace of unidentified DNA. This full investigation explores how the trail went cold and the painstaking efforts of law enforcement to keep the case alive as traditional forensic methods failed to yield a suspect. The narrative reveals the groundbreaking shift in the case that occurred when investigators turned to advanced genetic genealogy to bridge the gap between digital evidence and a physical suspect. By tracing complex family trees and cross-referencing public DNA databases, detectives finally identified Adam Antonio Karr, leading to a high-stakes arrest in 2020. This documentary covers the enti...