For True Crime buffs who love the twists and turns of a criminal investigation, Oxygen True Crime has a deep library of shows that ask the provocative questions, run exhaustive investigations and look for ways that  justice always is served

Mark of a Serial Killer

S2, EP1 "Killer Caller"

Minnesota police hunt for a killer caller who confesses to a string of murders in a chilling, high-pitched voice, begging for forgiveness; no one can identify him until one woman survives a brutal attack.

Mark of a Serial Killer

S2, EP2 "Deadly Summer"

In the summer of 1976, the NYPD are chasing a man shooting at couples in parked cars with a gigantic, .44 caliber handgun; he taunts the city with terrifying letters until police get a lead about a suspect who has shot a neighbor's dog.

Mark of a Serial Killer

S2, EP3 "Deadly Design"

Brooklyn shop keepers are afraid of closing time as a killer shoots his victims while locking up their stores.

Mark of a Serial Killer

S2, EP4 "The Other Zodiac"

In the 1990's, New York is on edge as a killer leaves coded clues at crime scenes and declares his compulsion to choose victims by their birth signs.

Mark of a Serial Killer

S2, EP5 "The Smell of Death"

A rash of young men goes missing around Chicago during the 1970s; when bodies start washing up in the river, a pattern emerges; a small piece of evidence leads police to the home of a model citizen, where his furnace puts the suspect in the hot seat.

Mark of a Serial Killer

S2, EP6 "Hunted to Death"

Police find a string of murdered women in shallow graves in very remote areas of the Alaskan wilderness; after months of searching, police zero in on a local family man living a double life that no one suspects.

Mark of a Serial Killer

S2, EP7 "Collar and Leash Killer"

Numerous women are found dead by the side of the road with a unique ligature that looks like a dog collar and leash; detectives are stumped until a 17-year-old girl manages an escape from a vicious kidnapper, leading police to a serial killer.

Mark of a Serial Killer

S2, EP8 "Killer Athlete"

The I-5 corridor in California is taken over by a brazen bandit who terrorizes the highway with a blitz of assaults and murders; the only clue to the killer's identity is a specific athletic tape used to bind his victims.

An Unexpected Killer

S1, EP1 "Modern Family Murder"

While investigating the murder of a devoutly religious couple, police uncover dark family secrets, leading them to a shocking suspect.

An Unexpected Killer

S1, EP2 "Dying to See You"

When a popular college student is found slain in the middle of campus, police suspect his friends and lovers might be involved.

An Unexpected Killer

S1, EP3 "A Twisted Connection"

When a suburban mom is murdered in her own home, investigators chase down an elusive killer that no one saw coming.

In Ice Cold Blood

S2, EP12 "Killer Secret"

A single mother is found dead in a hotel stairwell and detectives quickly uncover that she had a secret life that may have led to her demise.

In Ice Cold Blood

S2, EP13 "The Vanishing Cop"

When a police officer goes missing, it becomes apparent he is the victim of a jealous wrath.

In Ice Cold Blood

S2, EP14 "Deadly Greed"

Three members of a wealthy family are gunned down in their own home; with little evidence to go on, investigators embark on a multi-year surveillance operation to see if they can prove their instincts are correct.

In Ice Cold Blood

S2, EP15 "Secrets and Lies"

A beloved entrepreneur is murdered in his office; a secret double life is quickly revealed, and despite mountains of suspicion, lies and motives, his killer is not who one would assume.

In Ice Cold Blood

S2, EP16 "Mother vs. Son"

A man is found dead in the shower, and police have only two suspects, but to figure out who killed him and why, is not as cut and dry as it may seem.

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