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

S1, EP5 "Momentos of Murder"

When the Hillside Stranglers are caught police realize they still have another serial killer running rampant in Los Angeles; he tortures and toys with his model victims while keeping pieces of their jewelry as he snaps their last photo ever.

Mark of a Serial Killer

S1, EP6 "An Appetite for Murder"

Texas authorities have a killer riding the rails and leaving a literal trail of bread crumbs after eating at victims' tables; when more murders are linked, the FBI names a Most Wanted suspect and a national manhunt for The Railroad Killer ensues.

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.

Homicide for the Holidays

S4, EP4 "Murder Under the Mistletoe"

When a young mother is murdered during Christmas, investigators uncover a love triangle that shocks her family and forever robs them of their holiday cheer.

Homicide for the Holidays

S4, EP5 "Halloween Horror"

A teenage boy discovers a real-life horror scene in his home on Halloween morning; investigators must determine if the triple homicide is a random act of evil or a premeditated slaughter by someone close to the family.

Homicide for the Holidays

S4, EP6 "All Hallow's Evil"

After a single young mother fails to show up for work on Halloween, her family and friends suspect murder.

Homicide for the Holidays

S4, EP7 "Cold Turkey"

A prominent couple are found brutally murdered in their Montgomery, Ala., home on Thanksgiving night, leading detectives on a cat-and-mouse chase spanning thousands of miles across multiple states.

Homicide for the Holidays

S4, EP8 "Silent Night Murders"

When a young man and woman are found shot execution-style in a mall parking lot in the early hours of Christmas Eve, investigators believe a love triangle might have led to these brutal murders.

Homicide for the Holidays

S5, EP1 "Red, White and Blood"

When a young woman goes missing after a July 4th beach party, investigators have few clues to go on until a twist in the case reveals she might be the latest victim of a predator terrorizing the area.

Homicide for the Holidays

S5, EP2 "Deadly Fourth"

An abandoned car filled with blood leads investigators on the trail of a missing woman and her teenage daughter, who never showed up to the family's July 4th party; when their remains are found in a pond, everyone in their small town is a suspect.

Homicide for the Holidays

S5, EP3 "The Big Bad Wolf"

After a woman and her unborn child are stabbed to death on Halloween by a man wearing a wolf mask, investigators must calm the community and find the killer before he strikes again.

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