—Investigation 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.

3 seasonsFree episode availableDocumentary, CrimeTV-14

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A traumatized man calls 911 after seeing his friend shot and killed right before his eyes; with a surprisingly long list of suspects, investigators must sort through layers of lies, jealousy and mistrust to uncover the shooter.
Upcoming
After a doctor is shot at his ranch during a chaotic assault, investigators follow a trail of vehicles, surveillance footage and telephone records to discover a plan hatched by a band of brothers.
Upcoming
Calling 911, a young father gasps that he has accidentally shot himself while working on a farm; the police hear a second shot on the line while racing to find him.
Upcoming
Police in two cities receive a series of bizarre 911 calls from a serial killer confessing his crimes; the man becomes known as the Weepy Voiced Killer due to his strange, whining voice.
Upcoming
A terrified woman tries to give police clues in a harrowing call, then police find her body in the river, and they discover a stomach-churning truth about a killer who's been a predator for years.
Upcoming
A woman returns home to find her husband unconscious and bleeding on the floor of their horse barn; a 911 operator coaches her through CPR, but it's too late, and police later use the call itself to find clues to a plot to kill a beloved father.
Upcoming

Season 18 of 6 Episodes

Calling 911, a young father gasps that he has accidentally shot himself while working on a farm; the police hear a second shot on the line while racing to find him.
Police in two cities receive a series of bizarre 911 calls from a serial killer confessing his crimes; the man becomes known as the Weepy Voiced Killer due to his strange, whining voice.
A terrified woman tries to give police clues in a harrowing call, then police find her body in the river, and they discover a stomach-churning truth about a killer who's been a predator for years.
A man calls 911 screaming for help but is too terrified to give his address, and police scramble to find him; as detectives investigate, they uncover a shocking tale of torture and revenge that demonstrates the deadliness of unrequited love.
A woman returns home to find her husband unconscious and bleeding on the floor of their horse barn; a 911 operator coaches her through CPR, but it's too late, and police later use the call itself to find clues to a plot to kill a beloved father.
Calling 911, a former police officer struggles to explain he's been shot multiple times and his girlfriend has been abducted.
A man finds his wife with a cord around her neck and makes a heartbreaking 911 call, pleading for someone to save his beloved; then this story of love and loss is complicated by a missing phone, crime scene clues and a mystery man.
A man calls 911 to report he's on the telephone with his girlfriend who's in trouble; when police respond, the door is answered by the woman's two frightened sons, and she has been severely beaten.

Investigation 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.

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A frantic woman calls 911 saying an intruder just entered her home and shot her husband; when a local fire chief dies from his injuries, first responders work tirelessly to find out who killed one of their own.

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Murder Calls

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