Dateline NBC “Book of Lies” April 24 2026

Dateline NBC returns Friday, April 24, 2026, at 9/8c with a compelling new episode titled Book of Lies. Reported by Andrea Canning, the broadcast explores a shocking case where a carefully constructed public image begins to unravel, revealing a far darker truth behind closed doors.

The episode centers on Kouri Richins, a Utah mother who gained attention after publishing a children’s book about grief following the sudden death of her husband. At first, her story appeared to be one of loss and resilience. However, investigators soon uncovered evidence that pointed in a very different direction, raising serious questions about what really happened.

Prosecutors argued that Richins poisoned her husband, Eric Richins, in 2022 by lacing a drink with fentanyl, ultimately leading to his death. The case revealed allegations of financial pressure, hidden debt, and an extramarital relationship, all of which prosecutors said contributed to the motive. A jury later found her guilty of multiple charges, including murder and fraud, after a closely watched trial.

Book of Lies examines how the investigation unfolded, including the digital evidence and testimony that helped build the case. It also looks at the contrast between Richins’ public persona as a grieving wife and author, and the accusations presented in court. The episode features interviews and insights that shed light on how investigators pieced together the timeline leading up to her husband’s death.

With Andrea Canning reporting, Dateline takes a detailed look at a case that drew national attention for its unexpected twists and emotional impact. The episode airs Friday night on NBC, with streaming available the next day on Peacock.