Dateline: Secrets Uncovered (2017)

S8E14 The Threat

Title: The Menace Plot: As a recently divorced mother looked forward to new beginnings, her hopes were abruptly shattered by the sound of five gunshots. The investigation into Joan Lockwood's murder proved to be a challenging endeavor for law enforcement. With a menacing killer still at large, the sense of dread loomed over her family, leaving them in a state of constant fear.