S4 E1 • Jennifer / Neely Ann

A nurse is kidnapped and tortured by a serial killer; and a mother and her daughter are trapped in an attic during a flood.

Première diffusion : 15 mai 2011

S4 E2 • Sharetha / Joe / John

A pregnant woman is abducted, assaulted, and has her throat cut; a man survives a plane crash and is stranded in an icy river; and a man plays dead when an armed man in a warehouse starts executing people.

Première diffusion : 22 mai 2011

S4 E3 • Kara / Dan / Tamecka

A teen girl is abducted and assaulted; a photographer is trapped during the Haitian earthquake under debris in a hotel; and a woman is beaten and slashed with scissors by her neighbor.

Première diffusion : 5 juin 2011

S4 E4 • Jason, Dave & Joe / Martin

A canyoneering trip becomes a terrifying fight for survival when a flash flood launches three men over two massive waterfalls, and a 13-year-old boy is abducted and raped by a serial pedophile before being chained up in a buried box and left to die.

Première diffusion : 12 juin 2011

S4 E5 • Julie / John

A mother and her two young children are abducted and taken into the Florida Everglades by a crazed attacker; a man is mauled by a hungry bear and fights for his life in the driveway of his holiday cabin.

Première diffusion : 19 juin 2011

S4 E6 • Harold/John/Lisa

A store manager in Saint Louis is shot during a robbery, a Minot, North Dakota teen loses his arms in a farming accident, a girl from Tampa, Florida is kidnapped by a serial killer

Première diffusion : 23 octobre 2011

S4 E7 • Yvette/Jeremy and Jenny/Arkesha

Outside Salt Lake City, Utah a 17 year old and her boyfriend are shot late one night, in the parking lot of the deserted reservoir they were hiking in. Two people's lives collide in a split second when two Los Angeles bound trains collide on the same track. A 14 year old, walking home from a school dance in New Orleans, Louisiana, is attacked 3 men- all at different times- in a hellish night she'll never forget.

Première diffusion : 30 octobre 2011

S4 E8 • Anita/Jim and Glen/Sabret

A woman in Kokomo, Indiana is kidnapped, raped, and forced to live, chained up, in a metal box, for 13 days. 2 brothers are struck by lightning in a cabin at Yosemite National Park. A propane truck driver in Miami, Florida displays extraordinary courage when she is viciously beaten by a stranger.

Première diffusion : 6 novembre 2011

S4 E9 • Amy/Jeff/Tyler

A De Soto, Missouri woman is raped and choked by a man she met at a party. A snowboarder is caught up in an avalanche. In Medicine Hat, Alberta, Canada, a 13-year-old boy and his 12-year-old friend spurned a school bully. They thought they were safe, until he shows up at one boy's home. After repeatedly sexually assaulting the 13-year-old, he slits both boy's throats, leaving them to die in a burning house.

Première diffusion : 13 novembre 2011

S4 E10 • Michelle/Terri-Lynn/Jennifer

A Fort Wayne, Indiana woman is carjacked and raped. When a tornado sweeps through Huntsville, Alabama, a woman and her husband become trapped in their collapsed apartment complex, not knowing they're the only survivors in the entire building. An 8-year-old is abducted from her Dickinson, Texas condo and raped, before her attacker slits her throat and leaves her to die in a sawgrass prairie.

Première diffusion : 20 novembre 2011

S4 E11 • Jessica/Jeff and Mark/Kerri

A woman in West Palm Beach, Florida is attacked by a man with a Machete. 2 friends are attacked by a bear in Alaska. A Wauwatosa, Wisconsin teenager is attacked with an Arkansas toothpick while jogging, but manages to stab her attacker before he flees.

Première diffusion : 15 janvier 2012

S4 E12 • Lisa/Chris/Jeannette

A courageous story unfolds when a college student and her friend go out clubbing in Lake Havasu City, Arizona, but are abducted by a man who drives them out of town and sexually assaults them. He shoots Lisa after she escapes, leaving her to die in the desert winds. A man survives a tornado in Tuscaloosa, Alabama. A 9-year-old girl has to assume the patience of an adult when she is abducted, raped and stabbed by a friend's father.

Première diffusion : 22 janvier 2012

S4 E13 • Kaye/Johnny/Scott

A Laurel, Delaware insurance agent is sexually assaulted and stabbed over 150 times in the chest, face and neck, but miraculously survives. A Mount Hood, Oregon man crashes his car into a deep ravine. In Rockland County, New York, A man and his best friend are abducted at gunpoint and driven to a snowy construction sight where the two are shot at point blank range in the head.

Première diffusion : 29 janvier 2012

S4 E14 • Eduardo and Jayne

A man is kidnapped, tortured, given tainted blood, shot and held in a small box for more than seven months.

Première diffusion : 12 février 2012

S4 E15 • Kim and Nina/MIchael and Charles

Two women fight for their lives when a knife-wielding attacker ambushes them on a mountain trail and two men on vacation survive 14 hours adrift at sea after their ship sinks in 15 to 20 foot waves (survivors of The Erik which sank in the Sea of Cortez[8]).

Première diffusion : 19 février 2012

S4 E16 • Tanya/Andy/Denise

A 13-year-old is abducted in McKeesport, Pennsylvania and sexually tortured over a span of 10 years. A Littleton, Colorado man is attacked by a mountain lion. A woman is stalked by a man on the subway in Brooklyn, New York. She thought nothing of it, until the man follows her home one night.

Première diffusion : 1 avril 2012

S4 E17 • Paul/Tressel/Melissa

A Burnsville, Minnesota man is stabbed, shot, and left to die in his burning home in a botched robbery. A man and his friends are stuck on a sunken fishing boat for days in Port Aransas, Texas. Snow falls in Memphis, Tennessee as a woman is robbed, abducted at gunpoint, and locked in the trunk of her car as it begins to sink in a lake.

Première diffusion : 8 avril 2012

S4 E18 • Angela/Pat/Tricia

A Young woman from Chicago, Illinois is kidnapped and raped. A farmer in Auburn, New York loses his arm in a crop harvester. A woman is stabbed in Spring, Texas home by a man she thought was her friend.

Première diffusion : 15 avril 2012

S4 E19 • Jenn/Neil and Blake/Tiffany

A Fairfield, Ohio woman is attacked by her psychotic boyfriend who forces her to drink boiling water and whacks her with a meat cleaver. A father-son rafting trip turns into a nightmare when the boat capsizes and the two men must survive in the bitter cold conditions of the North Alaska wilderness. A college student in Tucson, Arizona is attacked in her home by a serial killer who sexually assaults her and slashes her throat.

Première diffusion : 22 avril 2012

S4 E20 • Donna/Michael/Sheila

A Bakersfield, California woman and her infant daughter are attacked. A man must stay afloat when his plane crashes over Lake Huron. Sheila fights for her life, when she is attacked in her Kettering, Ohio home by her husband and his friend. After raping her and stabbing her in the throat and face several times, they toss her in a dumpster, leaving her to die.

Première diffusion : 29 avril 2012

S4 E21 • Mijalina and Yvonne/Peter

A Sacramento, California man stabs his young daughter, before unleashing his anger on their next door neighbors. After a man decides to move to Washington state, he purchases a fixer-upped in Freeland, Washington. But his life becomes a nightmare when his contractor shows up at the house, beats him with a wooden board and kidnaps him.

Première diffusion : 8 juillet 2012

S4 E22 • A Crime of Passion: Crystal/Johanna

A Carlsbad, California woman is raped by her husband after a rocky breakup. A 17-year-old from Euclid, Ohio is stabbed, raped and shot in the face at point-blank range with a shotgun by her jealous ex-boyfriend.

Première diffusion : 15 juillet 2012

S4 E23 • Lenore/Steven/Ellen and Jim

Second segment: Steven Berk, a physician in Amarillo, Texas, is kidnapped for four hours in 2005 and released unharmed. In 2011, he wrote Anatomy of a Kidnapping: A Doctor's Story to show how the ordeal changed his perspective on life.[10

Première diffusion : 22 juillet 2012

S4 E24 • Midsi/Tammy/Leona

An 8-year-old is kidnapped while walking home from school and sexually abused over 2 horrifying days. A Clayton County, Georgia woman is abducted in broad daylight, taken to a salt quarry, stabbed, raped, and left for dead. 2 newlyweds, enjoying their honeymoon in the Trinity Alps near Weaverville, California are gunned down by a mentally insane man who believes that they have contaminated his Distilled water.

Première diffusion : 29 juillet 2012

S4 E25 • Terri/Walter/James

A Colorado Springs, Colorado woman is Taken hostage with her daughter and raped by her ex-husband. An Ashdown, Arkansas man becomes trapped when an airplane crashes into him. A Bethlehem, Pennsylvania man is attacked in his basement by a man with a golf club, who then burns him with chemicals.

Première diffusion : 5 août 2012

S4 E26 • Cynthia/Russ and Carol/Ron and Christine

Students and teachers are taken hostage during the Cokeville Elementary School hostage crisis in Cokeville, Wyoming. A couple is attacked while on their honeymoon in Jamaica.

Première diffusion : 26 août 2012

S4 E27 • Kirby/Suzanna/Reagan

While eating lunch in Killeen, Texas, two strangers are caught up in the infamous Luby's shooting when a man crashes his car into the restaurant and open fires. A mother of two is stalked by her ex-husband and beaten in the face with a crowbar in Rochester, New York.

Première diffusion : 2 septembre 2012

S4 E28 • Lynda/Kendra

A Shingle Springs, California woman displays extraordinary courage when she is attacked and raped by her former boyfriend, whom she met on an online dating website. A young mother from San Luis Obispo, California is stabbed several times by her boyfriend, Shelley Malil.

Première diffusion : 9 septembre 2012

S4 E29 • Heather/Donna/Kim

While driving on the highway in Gaston, Oregon, a woman is stabbed with a screwdriver by a man she offered to give directions to. A New Haven, Connecticut woman is sexually assaulted at gunpoint by a man she and her husband knew well. And a girl working at a gas station in Winthrop, Minnesota is viciously attacked by a robber, who takes her to the beer fridge and saws through her jugular vein (usually a fatal injury).

Première diffusion : 16 septembre 2012

S4 E30 • Laurie/Sandra/Melinda: Serial Killers

In London, Ontario, Canada, Sandra is attacked by Carl Eugene Watts, who slashes her face open. A Tweed, Ontario, Canada woman is beaten and sexually assaulted by serial killer, Russell Williams. When Carl Eugene Watts moves to Houston, Texas, he attempts to drown a woman and her roommate in the bathtub of their apartment.

Première diffusion : 30 septembre 2012