Thursday

A popular high school teacher was gunned down in his driveway in cold blood as he got ready to leave for work. Detectives uncovered a chilling trail of online clues including a gun painted to look like one used by a Star Wars stormtrooper and a deadly obsession.

Tool marking: A tool used to commit a crime can often be the same tool used to solve it. The pattern a machine leaves on an item, the unusual way a tool crimps a wire, and even something as innocuous as the shape of a wood chip can lead to a killer.

New forensic techniques used to solve old cases: Advancement in science and technology are encouraging people to revisit the past in hopes of answering questions that have remained unanswered, and solving crimes that seemed unsolvable. Techniques from the 20th century are applied to cases from as far back as ancient times.

High tech forensics: Investigators are always on the cutting edge of new forensic techniques that can help them solve cases more accurately. An experimental "brain fingerprinting" technique has already won the acquittal of a police officer accused of a drug charge. Solving crimes by computer and robotic police offers provide investigators allow crime-solving to take on a new-age dimension, and provide safer and more efficient ways to capture an embezzler, a drug-dealer or a killer.

A quiet Tennessee couple returns home to a nightmare—burglars lurking in the shadows, a home invasion turning deadly. In a crime of chilling brutality, their peaceful life is shattered, leaving behind a family desperate for justice and a town forever changed.

A double homicide in hudson, wisconsin leaves a small town reeling and two young detectives with little to go on. The victims are upright citizens, shot execution style, with no apparent motive. In agatha christie-like fashion, a tantalizing array of suspects emerge but after two years, there are still no arrests. Richard walter, the famed criminal profiler, becomes intrigued by the cold case and narrows the suspect list down until only one man is left standing. And no one can believe who that person is. A combination of expert crime scene analysis, computer forensics and the perpetrator’s own pathological urge to talk… the bereaved families finally see justice served.

Fake cops get busted by real cops.

A family man goes missing in a small West Virginian town known for its sweet mountain air. While his household searches the man’s regular haunts, police get involved -- and when he’s discovered, so are the abominations committed to his corpse. It seems there’s a monster on the loose. As authorities uncover the terrible facts, a community must stand together to protect their own.

Cindy Zarzycki is 13 years old when she goes missing on her way to a Detroit ice cream store. Considered a runaway, Cindy remains just another missing child on a milk carton until Detective Derek ÒMacÓ McLaughlin receives her file nine years later. Teaming up with Jen Liebow, a fresh-faced intern, Mac revisits every single clue to identify Arthur Ream, father of CindyÕs boyfriend Scott, as his prime suspect. With dogged determination and superb investigative skills, Mac and Jen discover new and conclusive evidence Ð enough to convict the killer. Arthur Ream is sentenced to life in prison twenty-two years after CindyÕs disappearance.

Arson investigation: Insurance torchings, mob burnouts and arson murders: These crimes are designed to take all clues with them. But a solid case can be built from a heap of ashes. Arson investigators do everything from gathering physical evidence to mounting undercover and sting operations.

In the early 1990’s Philadelphia became the scene of a bloody vendetta. The streets erupted in mob warfare. Authorities feared innocent people would be caught in the crossfire.

Bob and Farah are locked in a messy custody battle over their three young children. When one of them ends up dead, the men accused of the murder point the finger at the surviving spouse. But when a judge rules that the gunman's testimony can't be admitted at trial, will the killer escape justice?

When a perfectly healthy 8-year-old boy goes to sleep one night and never wakes up… His grieving family turns to Dr. G for answers. Then, a man is found dead on his floor, naked and covered in bruises. Now police are counting on Dr. G to find proof of murder.

Alexander Jackson, an Eagle Scout, called 911 to report a mysterious intruder killed his parents and sister, and shot him in the leg. But as they interviewed Alexander in the hospital, detectives began to suspect Jackson wasn’t telling the whole truth.  

Caretaker larry mallory notices something unusual while on his way to work. Lying in the middle of the highway is a leg from a department store dummy. When he gets closer, mallory sees two crows feeding on it. The leg is not plastic, it is flesh, and it has been severed from a female human body with surgical precision. The discovery of four more body parts in the area touch off a murder manhunt that involves seven police forces in four countries

Submissive 'good wife' Mary Winkler takes fate into her own hands, before fleeing the scene for a day at the beach with her children.

Encouraged by life insurance money, 33-year-old Kimberly Hricko takes her 35-year old husband Stephen on a romantic murder mystery weekend.

When experienced hiker Meredith Emerson disappears in the North Georgia mountains, a desperate search begins. Investigators soon realise they are hunting a serial predator stalking remote trails. The case exposes the crimes of Gary Hilton and launches a race against time across multiple states.

The chief of police in Sparta, MI leads an investigation into what happened to his family friend and babysitter, Julia Dawson. Julia is reported missing when she doesn't come from Christmas shopping, and her body is found beneath a snowbank, weeks later. While evidence mounts against one suspect, it would take more than three years before investigators are able to make an arrest.

Alexander Jackson, an Eagle Scout, called 911 to report a mysterious intruder killed his parents and sister, and shot him in the leg. But as they interviewed Alexander in the hospital, detectives began to suspect Jackson wasn’t telling the whole truth.  

Six days into 2004, an unidentified man is found stabbed to death just outside of the booming oil city of calgary, alberta. Just when the police appear to have no leads, a witness comes forward after seeing an article about the murder. The victim is identified as evan chu,* a local dj and security guard who has a penchant for helping wayward youth. School rumors and wiretaps lead police to three guilty teenagers.

It’s a model’s job to rivet the public’s attention. But in 1984, some aspiring models began attracting publicity in a terrible new way.

A high school girl who is shy finds a person she believes is her true love when a new boy shows up at school as the two have a love for comic and fantasy books.

When the bodies of a family of five are found beaten to death in their home, a tight-knit Illinois farming town is devastated by the news.

When the body of former policewoman Taylor Wright was discovered buried on a remote Pensacola farm, detectives had a lineup of suspects to investigate - her ex- husband from whom Taylor stole $100,000, her new live-in girlfriend Casandra, or her best friend Ashley. A locked cell phone held the clues.