A sudden moment of terror launches a frantic search for a costumed killer. Reported by Josh Mankiewicz, “Internal Affairs” is a story about bad choices, a fatal attraction and people who proudly wore badges at work -- while living lies at home. Follow now to get new episodes weekly, or subscribe to Dateline Premium on Apple Podcasts for early access and ad-free listening: apple.co/datelinepremium

When a wife and mother is murdered in Greeley, Colorado, responding investigators suspect the costumed killer is someone they know.

A secret affair gets discovered, and a murder suspect gets cuffed.

Choices about relationships, revelations and reconciliation set a murder in motion.

A detective plays cat and mouse with an unusual suspect, while crime scene evidence raises questions for investigators.

Recorded phone calls from a suspect in jail reveal the ties that bind unraveling.

A woman at the center of the case turns state’s evidence and the defendant takes the stand.

Hey Dateline fans! As a bonus for you, we’re sharing the trailer for Murder in the Moonlight, an all-new original podcast series from Dateline and Keith Morrison.

In this podcast, Keith Morrison takes listeners to a quiet farmhouse on America’s Great Plains, where Sharmon and Wayne Stock have just celebrated Easter with their big, loving family. That night, under a pale moon, the couple is shot to death in their bedroom. The investigation includes four suspects, spans three states, and comes down to a single shiny clue: A gold ring found at the scene of the crime.

Follow now to get the first two episodes on Monday, February 17th completely free. Or subscribe to Dateline Premium on Apple Podcasts, Spotify or DatelinePremium.com to hear the first two episodes now. Subscribers receive ad-free listening and early access to subsequent episodes.