Experts take true crime buffs along on their investigations, revealing how the latest technology helps them solve their most baffling cases.

A Daughter's Journey 22m A young woman haunted by her mother's disappearance investigates 20 years later and discovers a dark family secret hidden inside a diary.

Badge of Betrayal 22m When the body of a female student is found under an isolated highway ramp, an unusual clue leads San Diego police to a surprising suspect.

Deadly Matrimony 22m A go-go dancer vanishes under suspicious circumstances. Decades later, her family still has no answers, until a phone call changes everything.

Point of Origin 22m A cigarette butt and a scrap of paper point the way to a dangerous pyromaniac who set 10 fires in California over a three-week period.

Seeds for Doubt 22m When a beloved nurse dies in a car crash and alcohol is ruled out as the cause, seedpods found in her hair and clothes prove it was murder.

Saving Face 22m When three women disappear without a trace, DNA profiling and a talented forensic artist help the police link the crimes to a single predator.

Northern Exposure 22m When hikers in Alaska discover a body wrapped in sheets with orange stitching, fabric fibers and ingenuity help them pick up the killer's trail.

For Love or Money 22m After a real estate tycoon leaves a will with instructions to follow in the event of his violent death, his skull is found riddled with bullets.

South of the Border 22m The murder of an American tourist at a Mexican resort brings investigative teams on both sides of the border together to uncover a sinister plan.

Walking Terror 22m A man seen stabbing his wife, pushing her into a swimming pool and holding her head under water claims he has no recollection of the crime.

Plastic Puzzle 22m Shards of a broken headlamp help police find a vehicle that fatally injured a Michigan cyclist before its driver fled the scene.

Tagging a Suspect 22m When the evidence in a bombing goes up in smoke, savvy investigators find traces of proof the size of grains of sand that lead them to a murderer.

Strong Impressions 22m When a military wife is found dead with a plastic bag near her face, investigators prove that what looked accidental was a carefully staged murder.

Cereal Killer 22m When an arson fire destroys a home and a young boy is found dead 50 miles away, the search leads to a killer who left indisputable evidence.

A Leg Up on Crime 22m When the bodies of two victims are found in the same irrigation canal a year apart, police follow shoe prints on the trail of an unlikely killer.

Gold Rush 22m Emergency dispatch receives a call from a man saying that his girlfriend shot and killed herself, but an autopsy reveals a very different story.

Four on the Floor 22m Evidence links the murder of a Navajo women who was killed with a sledgehammer to the nearby slaying of another Native American two years prior.

Cop Out 22m Evidence in the case of a college student's death insinuates that he knew his killer, helping police unravel a web of lies and nab a murderer.

Summer Obsession 22m A seemingly accidental drowning in an affluent suburb brings police to focus on one suspect who had a million reasons to want the victim dead.

Moss, Not Grass 22m When a woman is found dead on a golf course in the Bahamas, a distinctive type of grass leads police to two suspects, each of whom blames the other.

Material Witness 22m A teenager disappears after an evening of horseback riding. A month later, her body is found near her home, carrying clues that point to her killer.

Garden of Evil 22m When a disc jockey is found dead in a community garden, a sniffer dog and a blood-splatter expert lead police to a killer who's too close for comfort.

Bump in the Night 22m A muddy footprint sets investigators on the track of a ruthless killer who brutally murdered a victim who was asleep in bed.

Murder on the Menu 22m When the chef at a historic restaurant is slain and the usual suspects don't pan out, the evidence serves up a chilling tale of debt and deceit.

Hot on the Trail 22m A rampaging serial arsonist sets multiple fires with the same type of device, which baffles investigators until clues arise from the ashes.

High 'n' Dry 22m A coroner's inquest, paired with forensic science, gets to the truth behind a woman's apparent suicide and the involvement of her grieving spouse.

To the Viktor 22m Investigators on both sides of the Atlantic bridge the distance to solve the puzzle of three related homicides that look like professional executions.

Wired for Disaster 22m Detectives smoke out a skilled bomber with a motive for murder when a violent explosion kills a woman and sends shrapnel flying through the streets.

Wood-be Killer 22m When a killer tries to incinerate and destroy proof of his crime, he unwittingly creates damning evidence only the newest technology can detect.

Shattered Dreams 22m Incongruous evidence vexes police when two people are shot dead in a car, but a fingertip from a latex glove points to another crime scene.

Dockter Visit 22m A war veteran is found dead in his home, but the investigation grinds to a halt until a lucky break points to a shady character with a sweet tooth.

Capitol Crimes 22m When a driver pleads innocent to a hit-and-run crime, police locate a missing vehicle and find evidence that proves what really happened that night.

Grave Danger 22m When a young man is killed in a mysterious car crash, the resulting evidence forces investigators to tell three families the devastating truth.

A Case of the Flue 22m Tiny clues explain strange evidence at the scene of an unusual robbery-homicide, where the perpetrator ran out of the house, instead of breaking in.

Live Wire 22m A bomb constructed to inflict maximum damage kills a victim with deadly force, but tiny clues identify the murderer as if they bore his signature.

A Novel Idea 22m When a man makes an emergency call to report his wife's injury in a fall, paramedics arrive to find a bloody crime scene that defies explanation.

Chief Suspect 22m Fresh evidence from a 911 call revives a cold case in which the wife of a respected police officer was murdered in her home.

Shell Game 22m A trio of ruthless killers thinks that a fire will cover their crime, but one tiny clue holds all the information needed to put them behind bars.

Ring Him Up 22m The 10-year mystery of a college student's disappearance is solved when new forensic testing shines a different light on an elusive prime suspect.