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A gunman shoots a firefighter dead in his driveway. Police focus on the unusual firearm used and follow a trail of clues left behind by the victim.

Shana Grice was murdered after being stalked by her ex-boyfriend, Michael Lane. He denied involvement, but experts examine police videos to determine the truth.

Discover how a few milligrams of forensic evidence can be crucial to a crime investigation and prove the innocence or guilt of the accused.

Exploring the mind of the obsessive murderer, following the work of psychologists as they study the muddled workings of the criminal psyche.

A Minnesota woman vanishes from a mall after a date with her estranged husband. A shocking discovery in a parking lot leads police to CCTV footage.

At the scene of a traffic accident a teen is dead at the wheel of her car. An autopsy reveals a sinister crime - will CCTV footage find her killer.

Glamour girl Hannah wants a glitzy gown to rival a Kardashian - can David get the bling on budget? Doctor Eve longs to ditch her scrubs for a lace dress.

No-nonsense bride Amy knows what she wants - will she trust David to take the reins? Control freak Emily wants an open-back gown that gets the tears flowing.

Angelica searches for the perfect strapless gown, but her mum, who is paying for the dress, has other ideas. Will she have to compromise to please mum.

Bride Lyndzie believes she was royalty in a past life and wants a regal, form-fitting wedding dress. Plus, Ashley wants a sexy gown that won't shock her mum.

Learn how 20th century techniques encourage people to revisit the past to answer questions and reexamine and solve ancient crimes.

Within weeks of their wedding, a debt-ridden wife recruits a team of teenagers to help her get her hands on her husband's life insurance policy.

A convicted bank robber and his partner in crime escape on their way to court and go on to make the biggest bank robbery in Wisconsin history.

When police officers respond to a domestic disturbance, a fleeing suspect fires at them. Fingerprints and an FBI investigation lead to the criminal.

When a record store clerk is shot and killed outside a bank, surprising clues left at the scene indicate that robbery was not the motive.

Sam Dreher and his wife are the perfect couple. But when Sam falls in love with another woman, his affair triggers a chain of events that spirals out of control.

When Ashley Pegram goes missing after meeting a man through a dating app, police discover she is caught up in a nightmarish trap set by an online predator.

Wrong. When Nikki McPhatter doesn't show up for her usual work shift, her friends immediately worry - and point investigators to her online relationships.

When two young men are shot dead, detectives turn to digital forensics, hoping hidden data buried in the victims' cell phones will help track down the killer.

When family man Ricky Saxton is found murdered, Investigators turn to a forensic data specialist at the FBI to help locate a missing piece of the puzzle.

When single dad David Heisler goes missing, clues lead detectives into the desert, but the trail stops cold. Digital forensics experts to help unravel this mystery.

Kevin Lewis's refusal to let go of his ex-wife triggers a series of events involving a teenage hitman and an obsessed lover ending in tragedy.

A father sees the warning signs, but nothing prepares him for the horror to come when his son brutally murders his own five children.