NBC News NOW

The investigation into the death of Spokane, Wash., businessman exposes a web of malevolence extending from the Pacific Northwest to a North Dakota oil field.

An in-depth look at the journalists who exposed the dangers of cult leader Reverend Jim Jones; interviews with witnesses to murders carried out by Jones' followers.

When film executive Gavin Smith vanishes, Los Angeles detectives search for clues amid reported sightings and suspicious circumstances.

When a mother of four dies unexpectedly on Valentine's Day, her death is attributed to natural causes, but a detective suspects that someone murdered the woman.