nvestigation Discovery's true-crime storytelling is often rooted in its award-winning visuals, but it's audio from actual 911 calls that sets the tone in ``Murder Calls.'' Each hourlong episode tracks a criminal investigation in which detectives must decipher the contents and subtext of an emergency call. As the case moves forward, the 911 audio ultimately leads investigators to the truth.
|First Aired||Sunday, 1st January 2017|
|Airing||Sunday at 5:00am|