Tuesday

When an Olympic gold medalist agrees to help a man, who poses as a triathlete, she is unaware that he wants more than just coaching.

When Timothy Moore disappears from his home in South Bend, Washington, residents realize that they do not know there neighbors as well as they thought.

Wisconsin v. Prokopovitz. When Victoria Prokopovitz went missing in 2013, her three grown children were beside themselves with worry. Her husband, James Prokopovitz, seemed oddly unconcerned about his wife’s disappearance, telling police she often wandered off and had twice tried to commit suicide. Despite a massive search, Victoria was never found. But a private detective who saw news reports of the missing woman offered his help to Victoria’s eldest daughter Marsha who kept up a Facebook campaign over the years hoping for clues about her mother’s disappearance.

Florida v. Henry Segura. When Brandi Peters and her three children were found murdered in Tallahassee in 2010, prosecutors pointed the finger at her ex-boyfriend, Henry Segura, who owed her more than $20,000 in child support. But as the trial got underway, an imprisoned drug dealer came forward, saying he had ordered the murders from prison saying Peters had worked as a drug mule and helped herself to more than $90,000 worth of drugs and cash. It sounded like an outlandish claim but DNA evidence found in her bedroom came back as a possible match to a Colombian cocaine trafficker.

Bombers, snipers, spree killers: Some people don't care who they kill, they just want to hurt innocent people. These killers are the hardest to catch because they have no connection with their victims, who are just in the wrong place at the wrong time. But even random bloodshed leaves traces at the scene that can direct an investigation and stop the killer before he can strike again

Every family has its secrets, and sometimes blood relations lead to bloodshed. When money is the motive, murder can rip at the very foundation of marriage and family. When murder becomes a family affair, investigators must turn to forensics to uncover a death in the family when the motive is for love or money

The tiniest residue left at the scene can become a mark of distinction in the most singular and intimate of ways. Investigators have come to rely on forensic evidence as simple as a smudge on a piece of tape or a faint impression left in the dirt. Investigators must have their eyes trained to find the full story of a murder etched in clues left at the scene.

A quiet Amish town, a young woman vanishing without a trace, and a chilling discovery months later. A red car, hidden evidence, and a community left shaken. The search for truth unravels a sinister plan, revealing the darkness lurking beneath a peaceful façade.

The body of a young woman surfaces in a Florida river with few clues beyond rope and duct tape. To identify her killer, investigators push forensic science to the limit, even turning to DNA from her former pet dog.

Suspects use the darndest things as weapons.

Outside the small town of Verdigre, Nebraska, a domestic altercation ends in death. Frances Thompson claims to have killed Dean Frank in self-defense, but as investigators dig deeper, they’re not so sure.

Known as the Vampire Rapist for his distinctive modus operandi, Wayne Boden would rape, strangle and bite the breasts of his victims. It was a bite mark that he left on his Calgary victim that proved he was the person responsible for these crimes. Superior evidence gathering and the help of a local orthodontist would work to ensure his conviction for his Calgary crime, and force him to plead guilty to three similar cases in Montreal.

Poison is an almost invisible form of death, and toxicologists must look for hidden clues in blood and tissue to bring these murders to light.

In the ‘70s and ‘80s a gang of thugs wreaked havoc on the island of Puerto Rico. Organized, experienced and deadly they seemed beyond the reach of the law.

The Whitaker family returns home from a night out celebrating son Bart's graduation from university when they interrupt a burglary in progress at their Texas home. With all four family members shot, police are short on leads – until a surprise informant breaks the case wide open.

A 32-year-old man collapses and dies at his sister's home. The man had been feeling sick for a week prior to his collapse. Dr. G has no medical records to go on, as the man did not go to the doctor, but his external appearance indicates that he was in extremely poor health. Dr. G suspects that the man's self-neglect may have played a role in his death. A 49-year-old father is found dead in his kitchen with multiple stab wounds. The man's teenage son claims that his father stabbed himself to death, but the police suspect that the son was responsible. It's up to Dr. G to determine if the death was a suicide or a homicide.

Shortly after midnight on Valentine’s Day, police found Amie Harwick, a prominent sex therapist and Drew Carey’s former fiancé, dying on the patio under the balcony of her Hollywood Hills apartment. Detectives began to investigate — did she fall, or was she murdered?

The murder of a gay couple in rural california has police stymied – who would want to hurt the well-liked pair? As investigators and forensic scientists dig deeper, they suspect that the killings are linked to a series of arsons that have destroyed several synagogues and an abortion clinic. The trail leads them to the sinister world of hate crimes -- and a chilling plan that must be stopped.

After years of physical abuse, Karra Trichele Allen and her husband Brian take a dangerous turn in their relationship.

When 71-year-old Colleen Harris discovered her 73-year-old husband Robert was having a long-distance affair with a 35-year-old woman in Mongolia, she decided to teach him a lesson.

Patients place their trust in charismatic neurosurgeon Christopher Duntsch, only to suffer catastrophic injuries and death. As complaints mount, a small group of doctors fight to stop him, exposing one of the most shocking medical scandals in American history.

On New Years Eve, 2010 in Cooperstown ND, an intoxicated Kurt Johnson is given a ride home from a local bar. When it’s discovered that Kurt never arrives home authorities begin their search and what they uncover will shock them to their core.

James Ray, a prominent attorney, lived in an upscale home with his girlfriend Angela Bledsoe, a successful businesswoman. But when Angela didn’t show up at the office , police found her dead on the kitchen floor . Ray and his BMW were nowhere to be found.  

In march 1992 claude hawkins was shot dead while he was fishing in coshocton county, ohio. Investigators found no evidence at the crime scene, but hawkins' murder mirrored multiple deaths in other nearby counties and a psychological profile pointed to thomas lee dillon as a suspect. Police arrested dillon on firearms charges, giving authorities time to gather enough evidence to charge him with the murders that had plagued the community.

When the small community of Noel, Missouri discovered their bank was robbed, they’re shocked. When the bank president turned up missing, they’re outraged. And when clues began to surface the facts were more terrible than anyone could have guessed.