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Sixteen-year-old Mujey Dumbuya turns up dead four days after leaving her home to go to school; police across multiple jurisdictions unite to uncover the tragic truth behind her murder, and jailhouse calls provide the clues to catch the killer.

Calls From the Inside

Secrets Are Never Innocent

The burning body of trumpet player Scott Sessions lies smoldering along a mountainside road; an investigation uncovers three potential suspects, plus another dead body, but calls from an inmate at the Weld County Jail reveal the true killer.

Flames of Jealousy

In December 2001, the brutal murder of Robert Fingerhut, the respected owner of two bus stations, spurs an investigation that reveals a sordid relationship of lust, lies and murder; jail calls hold the killer's secrets.

Death by Prima Donna

An unknown killer tortures and murders a couple in January 2011; DNA links an unexpected suspect to the crime, and investigators must rely on recorded jailhouse phone calls to gather solid evidence and bring the culprit to justice.

Connections to Murder

When a ranch hand is found dead in a river outside of Salt Lake City, investigators across two states must work together to catch the killer; searching for the truth uncovers a trail of fraud, deception and adultery, shocking a small town in Nevada.

Murdered by Manipulation

When a young mother of three vanishes on Mother's Day, police race to find her; the search grips the entire community, but it uncovers 20 years of lies and violence and a potential serial killer hiding in their midst.

Killer Identity

Fishermen find a 27-year-old man shot to death on a river embankment; a key suspect leaves investigators guessing before jailhouse calls reveal the truth of a twisted love triangle that ended in murder.

Killing the Competition

When a former crime reporter is found murdered inside his home, investigators eye his spouse and his neighbors, until intercepted jailhouse calls reveal the true killer.

Exposing the Cover Up

Investigation Discovery continues its heritage of providing in-depth, compelling documentaries & series that challenge viewers to think about key issues that shape our culture and define our world.

Investigation Discovery

For over a decade, a twisted web of secrets and lies conceals the identity of the person who heartlessly murdered a selfless mother of three; when the truth finally comes out, the revelation stuns the family, the community and the investigators.

My Brother's the Killer

In March 2020, Gretchen Anthony disappears after texting loved ones that she was diagnosed with COVID-19; when a search of her home suggests foul play, investigators rely on recorded jailhouse phone calls to unravel the mystery of what happened.

The Covid Killer

Admissions, threats, slips of the tongue, and bribes that are heard on jailhouse phone calls are used to frame the narrative of murder investigations steeped in mystery.

S2 E11 | Secrets Are Never Innocent

E11 | Secrets Are Never Innocent

E10 | Flames of Jealousy

E9 | Death by Prima Donna

E8 | Connections to Murder

E7 | Murdered by Manipulation

E6 | Killer Identity

E5 | Killing the Competition

E4 | Exposing the Cover Up

E3 | My Brother's the Killer

E2 | The Covid Killer