NBC True CRMZ

The episode follows the 17-year police investigation and how detectives tracked down a serial rapist.

In Colorado in 1996 a young woman's body was found in an alley. After the case goes cold advancements in genetic technology lead police to the killer.

New DNA technology help uncover the truth behind a cold case of a 69-year-old woman who was killed in 2011.

Following the decadeslong investigation into the murder of Helene Pruszynski.

New DNA technology help uncover the truth behind a cold case of a 69-year-old woman who was killed in 2011.

Following the decadeslong investigation into the murder of Helene Pruszynski.

An in-depth look at the journalists who exposed the dangers of cult leader Reverend Jim Jones; interviews with witnesses to murders carried out by Jones' followers.

Profiling the case regarding a single dad and former firefighter who was found dead in his garage.

Investigators unlock a tool that may help unveil the identity of a schoolteacher's killer.

Ghostly phenomena at Moss Beach Distillery in California. Also: a university student vanishes after embarking on a cross-country trip; a newborn's miraculous recovery baffles doctors.

A baby's miraculous recovery; a liquor store owner's murder. Also: a man dies from carbon dioxide-poisoning in his garage; a bogus company is set up to bilk investors out of millions of dollars.

A con artist's scam; the death of a Los Angeles DJ. Also: children begin to contract leukemia in a small Nevada town.

A mysterious humming sound torments thousands across the globe; a husband and wife are wanted for the murders of the wife's aunt and uncle; a Phoenix man vanishes.

Psychic Edgar Cayce. Also: a woman goes missing after being seen at work; a man disappears after attending an off-campus party.

Newsmagazine that delivers viewers stories ranging from mysteries to documentaries.

When Michele is found dead, police officers uncover a fatal betrayal.

Police suspect natural causes as they investigate a man's death, until they they uncover a love triangle that turns the tragedy into a tangled mystery. Andrea Canning reports.

Police believed a pair of double homicides in Nebraska, five years apart, might be connected. Investigators working to solve the crimes feared the killer might strike again.

New DNA technology help uncover the truth behind a cold case of a 69-year-old woman who was killed in 2011.

Following the decadeslong investigation into the murder of Helene Pruszynski.

In 2001 a young couple were brutally assaulted in Salisbury Wiltshire. Over a decade later new DNA technology helped lead investigators to the attacker.

The case follows the investigation into the Halling Rapist and how familial DNA helped solve the crime.

In 2001 a young couple were brutally assaulted in Salisbury Wiltshire. Over a decade later new DNA technology helped lead investigators to the attacker.

The case follows the investigation into the Halling Rapist and how familial DNA helped solve the crime.

Investigation into the murder of a New York socialite.

A San Diego woman arrives at an emergency room, so the local law enforcement is called to solve a medical mystery.

College student Reagan Tokes worked a late shift at a local restaurant, then went missing. Police wondered if a break-up was to blame or if a string of alarming attacks were related. What happened to Reagan left her family and a city outraged.

Poverty Island's treasure; a rare calf is born; a woman claims that she's possessed by the spirit of a murdered co-worker; a Texas woman is shot dead.

Messages from beyond the grave bring comfort to families; an elementary-school student is kidnapped by a man claiming to be the boy's father; a woman searches for her birth mother.

UFO sightings in Virginia; the case of a missing heiress. Also: relatives of a New York corset maker are sought; a woman seeks her long lost brother; a newborn is kidnapped outside a Brooklyn hospital.

A purportedly haunted house; claims of physical and sexual abuse at the hands of a cult leader. Also: a wife is gunned down outside of her husband's office; a man leaves a family function and vanishes.

Two train fatalities are declared murder; human bones are found in a military footlocker; a woman seeks her half-sister; siblings look for each other.

A man finds his dead wife at the base of the stars.

An investigation into the murder of a father and his infant son, followed by his widow killing his business parter.

A mother of two disappears from her parents' home in Michigan without her phone and IDs. The police later declares her dead even without a body.