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

An Unexpected Killer

S2, EP7 "New Jersey Nightmare"

A recently retired woman is found murdered, and detectives struggle with a lack of evidence and try to track down a long list of suspects.

An Unexpected Killer

S2, EP8 "Fatal Ambition"

A hard-working young woman is discovered stabbed at the side of a road, leading police on a tireless investigation for 10 years to unveil a killer who is hiding in plain sight.

An Unexpected Killer

S2, EP9 "Deadly Disrespect"

After a 35-year-old analyst for the NSA is fatally stabbed, police look at a number of suspects; detectives close in on the killer, but the investigation takes a shocking turn.

An Unexpected Killer

S2, EP10 "Closet Murderer"

When a 98-year-old widow is found dead in her entryway closet, a chilling discovery leads investigators to a killer in the community who harbors a dark secret.

An Unexpected Killer

S2, EP11 "Murderer on Main St."

A beloved resident of a tight-knit Nebraska town is murdered, leading detectives to look at a wide range of suspects before the trail leads to a killer who lives among them.

An Unexpected Killer

S2, EP12 "The Mayor's Wife"

After a respected educator and mother of two is found dead in small-town Alabama, the investigation focuses on fraught family relationships, but the discovery of a dark secret unveils a killer no one saw coming.

An Unexpected Killer

S2, EP13 "Hidden Betrayal"

A civic-minded teen is shot to death in his own bed, but just as investigators are closing in on those responsible, a twist leaves everyone stunned.

An Unexpected Killer

S2, EP14 "Gone Without a Trace"

A divorced mother of three is stabbed to death while recovering from major surgery, but police are frustrated by a lack of evidence, until a startling admission reignites the case.

Mark of a Serial Killer

S3, EP4 "The Englewood Killer"

Chicago police investigate the murders of several women, whose bodies are discovered in abandoned buildings barefoot.

Mark of a Serial Killer

S3, EP5 "Classified to Kill"

Chicago detectives believe that a serial killer is using classified ads to lure and murder his victims.

Mark of a Serial Killer

S3, EP6 "The Interstate Killer"

A killer crisscrosses the Midwest leaving a string of victims along the interstate, but when he realizes investigators are hot on his trail the murderer suddenly changes his mark.

Mark of a Serial Killer

S3, EP7 "The Grim Sleeper"

A cold-blooded killer conceals his victims' bodies with trash, discarding them like garbage in the back alleyways of Los Angeles.

Mark of a Serial Killer

S3, EP8 "The Tourniquet Killer"

A Houston killer taunts the media and authorities as he uses homemade ligatures to murder his victims.

Mark of a Serial Killer

S3, EP9 "Deaths in the Desert"

El Paso investigators race to track down a ruthless killer who is burying his victims in shallow desert graves, dead or alive.

Mark of a Serial Killer

S3, EP10 "Summer of Fear"

Chaos descends on Phoenix as two serial killers compete for the media's attention and the bodies pile up faster than the police can investigate.

Mark of a Serial Killer

S3, EP11 "The Monster"

Investigators in East Baton Rouge, La., hunt for a serial murderer who carefully carves up and cuts the bodies of his victims after death.

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