Saturday

Most shocking: Citizen justice is a television special event featuring civilians under the gun and making a stand.  With never-before-seen footage and new, exclusive first-hand accounts, this special edition includes an ex-con attacking a cop which forces a good samaritan to lay down the law.  Plus, vigilantes corner a small-time crook and deliver a big-time beat-down.  And, gangsters invade a pawnshop but are blown back by a hail of gunfire. Tv-14-v

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.

After a mother is found murdered on a deserted road outside of town, four years go by with investigators linking evidence to an air force base where a standardized testing scheme helps link the murderer to the crime.

When a Hollywood cameraman is found shot to death, it takes two years for investigators to piece together the evidence and uncover layer upon layer of hired killings in order to hide the identity of the person behind it all.

When a prominent business man is killed by a bomb in his car, thirteen years pass until investigators are able to uncover a trail of secret love affairs and financial receipts to lead them to the most unassuming killer.

When blue-collar worker Lyle Kopenkoskey is found dead down a secluded country road, investigators race against the clock to uncover the grisly truth behind the cold-blooded crime.

When the wife of a famous New Orleans sportscaster is shot in the face point blank, the killing looks random, but the play-by-play gets more scandalous by the hour.

Law student Adrienne Hickson fatally stabs her boyfriend Shawn Washington with the knife for her birthday cake when he helps his friends move instead of spending the day with her.

Applebee's waitress Rachel Wade, 19, stabs 18-year-old Sarah Ludemann to death in a vicious teen-girl cat fight over shared bad boy boyfriend Josh Camacho.

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.

Just outside the sleepy town of Athens, WI., Kenneth Kunz returns to his family farm to find four of his family members murdered and one missing.

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.

The body of a young woman found burned in a truck launched a manhunt to find her killer. When more bodies began to turn up across the country, the FBI believed the cases were linked. Investigators had a suspect. They just couldn’t find him.

In the 1980’s, two partners created a nightclub that would bring them wealth and international fame. The male strip club phenomenon promised female patrons fun and excitement. But the bright lights hid a dark side.

A son discovers that his mother is a con artist of epic proportions, and will stop at nothing to get what she wants. While Kent Walker avoids her evil influence, he fails to protect his younger brother from becoming her lackey in crime -- and a deadly killer.

A beautiful flight attendant falls in love with a wealthy businessman, who promises her the world. But Heather Grossman’s life comes crashing down after a bitter divorce, when she becomes the target of a hit-man. She is left fighting for her life – and justice.

A sister discovers that her beloved big brother is living a horrific double life. John Wayne Gacy seems the pillar of success with a booming contracting business, but beneath his façade is a serial killer who stalks teenaged-boys.

Two sisters believe that their dad is an All-American hero and highly respected arson investigator. Their dreams are crushed when they discover that he is in fact one of the worst serial arsonists of all times.

Missouri v. Joseph Elledge. An exchange student found a career and a love match in the idyllic Missouri university town of Columbia. It was a shock to their friends and family when she disappeared, leaving both her child and cell phone behind. The missing persons case made headlines as police divers painstakingly searched a nearby river without success. But then a discovery - hikers stumbled on the remains of a corpse in the woods, and forensic experts confirmed it was Mengqi. The “no body” case was now officially a murder case with strong forensic evidence matching dirt on the killer’s boots to the dirt at her gravesite.

Tennessee v. Billy Ray Turner. Ten days after NBA player Lorenzen Wright went missing, the player's body was found in a swamp, shot 11 times. His death made headlines – Wright had played in the NBA for 13 seasons, was a first-round draft pick in 1996, and played for the Memphis Grizzlies and Los Angeles Clippers. But police initially had no clue who killed him and reporters speculated it was a drug deal gone bad. Lorenzen’s mother was tireless in her pursuit for justice and kept the case in the headlines as the murder went unsolved for a half dozen years. Finally, a break in the case led police to a suspect who had been hiding in plain sight.

Micah Rine's close-knit, God-fearing family had a bad feeling about Thomas Pate. He seemed... inauthentic. He had a troubled past. But Micah was in love, and nothing could persuade her that he wasn't the man of her dreams. By the time Micah realised Thomas had a dark side, it would be too late.

Glenna and Marty Duram’s marriage was always volatile. They argued about money, and Glenna’s gambling habit. Jokes about killing one another barely raised an eyebrow- until the day Marty was actually found dead. Prosecutors struggled to prove what had happened - but then an unusual eye witness came forward.

Detectives investigate the murder of a 15-year-old girl, and a drive-by shooting that involves a hate crime.

Detective Sandy Nava interviews a 14-year-old girl who says she's had sex with an assistant teacher, and vice cop Bobby Beals goes undercover as part of a lewd conduct sting in the men's room of a public park.