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The 1995 killings of a woman's parents are investigated. (Repeat).

Questions about stalking and suicide surface in the 2012 shooting death of a woman's ex-boyfriend. The Season 20 premiere. (Repeat).

Two mysterious crimes tied together with a shocking common ground are investigated. (Repeat).

After the brutal attack of a single mother in her home, authorities work to uncover a criminal who uses the power of lust as a deadly weapon. (Repeat).

A truck driver is shot to death in his semi-truck. (Repeat).

The body of a well-known mechanic is found floating in a Tennessee river. Police unearth evidence that leads them to a ruthless killer fueled by addiction and greed. (Repeat).

After returning from several tours of duty abroad, a soldier is found beaten to death on his army base in Hinesville, GA. Investigators soon discovered the greatest danger may have been waiting for him closer to home. (New).

Investigators look into the double shooting incident outside a record label in Nashville that leads them to the dark side of the country music industry. (New).

Following a violent storm, a Rhode Island harbormaster discovers a badly decomposed body aboard a sailboat. Detectives must now determine whether the killer was Mother Nature or a more sinister force. (Repeat).

(New).

(New).

When a Kansas mother is discovered brutally murdered in her own home, investigators fear that her missing teenage daughter has met a similar fate. They scour the area for clues until rumors guide them to an unlikely mastermind. (Repeat).

Investigators look into the double shooting incident outside a record label in Nashville that leads them to the dark side of the country music industry. (Repeat).

A triple homicide rocks a Christmas tree-farming community. Two small-town sheriffs across state lines have to work together to find the perpetrator amongst the Blue Ridge Mountains. (Repeat).

Investigators from three separate counties along the Floribama border team up with the daughter of a missing Jackson County, Florida, man to uncover how the fireworks at a 4th of July celebration ended in murder. (Repeat).

(Repeat).

(Repeat).

A mother suddenly vanishes. A father is under suspicion. There was no body, no weapon, and no eyewitness. (Repeat).

A homeowner discovers a mummified corpse buried inside a barrel beneath his home. Detectives piece together a series of hidden clues to locate a killer who thought they had committed the perfect murder. (Repeat).

The body of an elderly woman is found brutally murdered and stuffed inside a wishing well in the backyard of her property. A dogged detective goes on a years-long hunt to catch her elusive killer. (Repeat).

The Caronnas live an idyllic existence in Cordova, Tennessee, a green suburb. When one of them goes missing on the day of a huge party, investigators discover a strange narrative of desire and greed hidden behind closed doors. (Repeat).

The deadly shooting of a star polo player at the hands of his heiress girlfriend sends shockwaves through a tight-knit Virginia community. Detectives must determine if the heiress acted in self-defense as she claims or if there's more sin to the story. (Repeat).

A pastor in New Orleans gets murdered while the city is busy with the aftermath of Hurricane Katrina. (Repeat).

The owners of Miami's famous Fontainebleau Hotel are hit by tragedy when their matriarch is discovered dead in her house. Terror creeps in when her son is slain not long after, leading detectives to wonder if someone is attempting to bring down the dynasty. (Repeat).

When two young women are brutally murdered in Phoenix, friends and family wait decades for answers. When advancements in DNA reinvigorate the case, police discover their killer has been hiding in plain sight. (Repeat).

A summation of the case of Susan Polk, who was convicted of second-degree murder in the October 2002 death of her therapist husband. (Repeat).

Missouri police are called to the home of a prominent judge's daughter to find her husband dead on the couch. While the crime scene suggests a break-in, investigators uncover evidence of a scandalous murder plot driven by greed. (Repeat).

When a beloved Florida mother is found brutally shot to death and her newborn missing, investigators race against the clock to track down a mysterious visitor whose motives prove sinister. (Repeat).

Serenity in the Montana mountains is shattered when a man is shot to death on his neighbor's land. Detectives learn of an escalating dispute over trail access and reenact the shooting to discover if claims of self-defense match the evidence. (Repeat).

A feud between neighbors in the quiet suburb of New Brighton, Minn., turns deadly when one man's passion for local wildlife drives his neighbor to snap. Investigators must determine whether the shooter acted out of self-defense or bitter revenge. (Repeat).

When an eight-year feud between neighbors in Santa Clarita, Calif., ends in a violent confrontation that leaves one man dead, detectives investigate if the shooting was a tragic case of mistaken identity or a calculated murder plot. (Repeat).

A beloved pastor is fatally shot in his sleep by a mysterious intruder. Investigators uncover a scandalous lifestyle and sordid family secrets that send shock waves through a small Oklahoma community. (Repeat).

Sarah and Ryan were newlyweds when she drowned in the bathtub. There were many questions and it took three trials to find the truth. (Repeat).

Stephen Avery and his nephew are convicted for killing Teresa Halbach. (Repeat).

A look at Nicole Pietz's disappearance during the dinner with her husband and friends. (Repeat).

A look at the murder of Debbie Kelly. (Repeat).

A troubled Las Vegas lawyer goes to sleep early while her psychologist husband takes their daughters out to dinner. When she doesn't wake up the next morning, her family is convinced there's more to this incident than investigators initially believe. (Repeat).

When first responders find a self-made millionaire dead in his lakeside mansion, initial signs point to a natural cause of death. As investigators probe further, however, they uncover a toxicological bombshell that blows the case wide open. (Repeat).

Vince Goslyn found his calling in the military. His career was thriving and he had built a beautiful family. Then one night, the father of five was gunned down. (Repeat).

Amber Belken was a young woman with big dreams. Then, she was found murdered. Was Amber the victim of a robbery gone wrong or was this brutal crime personal? Three people knew the truth. Two of them would risk their lives to reveal it. (Repeat).

Investigation of the murder of a real estate agent. (Repeat).

Investigators believe a young woman went missing on her own accord, but her mother is convinced that someone close to her is hiding a big secret. A two-year search for the truth brings investigators to the backyard of a historic location. (Repeat).

Investigators uncover a mystery with an unsettling truth in a plush California home while attempting to identify the remains of a victim found buried in its backyard. (Repeat).

Two female college students' whereabouts remain unknown for months, until a parole officer recalls startling information that would lead investigators to the backyard of a remote property. (Repeat).

A homicide detective enlists the help of a local veterinarian to solve a murder case in California after a homeowner randomly uncovers human remains while doing yard work in his backyard. (Repeat).

The owners of an Alabama country store are brutally murdered in their home, and detectives must sort through a maze of bootlegging, gambling and family secrets to uncover the killer. (Repeat).

After Hurricane Ivan tears through the Floribama region, the discovery of a body in a burnt-out home in Chunchula, Alabama, launches an investigation that reveals an unexpected evil in the community. (Repeat).

When a young woman goes missing after a July 4th beach party, investigators have few clues to go on until a twist in the case reveals she might be the latest victim of a predator terrorizing the area. (Repeat).

An abandoned car filled with blood leads investigators on the trail of a missing woman and her teenage daughter who never showed up to the family's July 4th party. When their remains are found in a pond, everyone in their small town is a suspect. (Repeat).

Tara Ord was a young woman with big dreams who vanished without a trace. It took years for determined cold case detectives to uncover the long-buried clue that blows this case wide open. (Repeat).

A man from Indiana finds himself in one of Japan's biggest natural disasters. (Repeat).

A toddler fights to survive after being shot in the head. (Repeat).

A look at the disappearance of Debbie Hawk. (Repeat).

When a young mother goes missing in rural Ohio, it's a race against time to uncover the truth behind her disappearance. As evidence begins pointing to foul play, investigators fear she may have been the victim of a toxic family dynamic. (Repeat).

A domestic quarrel leads investigators to an unlikely suspect after a hardworking family father is killed down in his driveway, unraveling a history of violence, deception, and treachery. (Repeat).