A woman adopts a 6-year-old child through an online re-homing forum; she's soon inspired to help re-home other children but is horrified to discover that two of them may have fallen into the clutches of a child abuser.

When 14-year-old Alicia DeBolt goes missing, a helpful neighbor points the finger at an older teenager; then, police discover a string of text messages on DeBolt's cell phone and close in on a suspect whose obsession with the teenager led to murder.

Firefighter Sam Dreher and his wife, Danielle, are the perfect couple until their hopes of happiness are dashed and their marriage fails; Sam falls in love with another woman, triggering a chain of events that spirals out of control.

Twenty-four-year-old Jessika Rovell falls for Jeffrey Marsalis' charm and good looks but when she discovers his secret online life as Dr. Jeff, she realizes she's been dating a monster who stalks dating sites.

An aspiring boxer leaves in the middle of the night to meet an attractive young woman who contacted him on Facebook, then he is found dead in his car the next day, and his murder reveals a family secret kept hidden for more than 30 years.

The fan of an edgy hip-hop duo, Jessica Rae Sacco becomes the victim of a grisly murder after seeking out other devotees who call themselves "Juggalos."

When Grace's father discourages her from meeting online beau Robert in person, the two star-crossed teenagers hatch a plot that will change their lives forever.

Leslie Belkin meets a nice guy named George on Craigslist, then comes to realize he has a criminal record.

Brilliant teenager Breck Bednar has a passion for computers and online gaming, then he becomes ensnared by a young man who engages him in a deadly game.

Seventeen-year-old adoptee Chelsea Schobert feels out of place at home, then she finds acceptance with Shawn whom she meets online, but as their relationship develops, the whole family is drawn into a devastating series of events.

Dallas teen track star Shania Gray is left traumatized after being raped while babysitting; when a new social media friend offers support, she opens up to him, leading Shania into a trap that ends in tragedy.

When a single mother finds her dream man online, she can't believe her luck; however, her quest to meet him soon turns into every mother's worst nightmare; as police scramble to avert tragedy, they discover an elaborate web of lies.

Bursting with confidence after losing 200 pounds, a newly single 33-year-old woman spends her time flirting with men online, then she fails to turn up for work one day.

College freshman Jason Rodriguez finds freedom online when he begins dating several young women who pique his interest, then he turns up dead after agreeing to meet one of them in person.

A young woman turns to the Internet for help and advice when her young son mysteriously falls ill.

Three girls meet a flirty and friendly guy online, then his demeanor shifts, and he traps the girls in a vicious game they can't escape.

High school student Brandon Wentzell falls for blonde beauty Clarissa Chistiakov online, but the course of love doesn't run smooth as the past collides with the present, shattering lives.

Fifty-year-old Beverly Carter is an Internet-savvy real estate agent who disappears after agreeing to meet a prospective home buyer at a remote location.

When two teenage girls fall in love, their hedonistic lifestyle is played out on social media for all to see; behind the facade, petty jealousies and insecurities escalate until finally the pressure erupts in a frenzy of shocking violence.

Michele Reiter bounces back after a failed marriage and a troubled romance, then she goes missing after agreeing to go on a date with a new friend she has met on Facebook.

A hopeful 12-year-old singer looks for fame online using her webcam, gathering many admirers; she soon falls for a boy who flatters her, but her dream turns into a nightmare after a shocking photo is shared online.

Powerfully emotional stories tell of people who have been targets of compulsive stalkers. According to the Centers for Disease Control and Prevention, more than 6 million people in the U.S. are stalked each year, and in most instances, the stalker is someone the victim already knows. The series' hourlong episodes dramatize actual cases through visceral re-enactments and pointed testimony of victims, family members and law enforcement authorities, revealing what happens when stalkers can't have what -- or who -- they want, and stop at nothing to ensure that no one else can either. The chilling accounts probe the mechanics of an obsessive mind and the devastating impact of delusion.

While most killers act alone, there's another type of murder that happens less frequently yet still produces horrific consequences. That's when people decide to kill as a group. This Investigation Discovery series details true-crime cases that involve victims who have been savagely murdered by their own friends. Stylized re-enactments featuring first-person accounts from law enforcement personnel and friends and family of the victims accompany each story.

Secrets are never safe from seeing the light of day, even ones that are housed with skeletons and buried six feet under. Those, especially, are of interest to law enforcement personnel, who unearth long-thought gone secrets that eventually help unravel murder mysteries. The details are described in hourlong episodes of "Grave Secrets," with re-enactments providing the meat and potatoes of each true-crime story, and interviews with victims' family, friends, and investigators adding context.

"Beyond the boundaries of ordinary life, there is another world that lies just outside of town, where places have no names." That's Investigation Discovery's introduction to "Murder Comes to Town," a true-crime series that reveals what can happen in solitary and desolate places. Hourlong episodes feature gripping tales of betrayal and murder buttressed by re-enactments and interviews with friends, family, and neighbors of the deceased, plus law enforcement personnel.

Transporting viewers into what Investigation Discovery calls "a vortex of dark mystery and psychological terror," the docuseries "Dead Silent" delves into actual stories of crimes set in desolate locations. Hourlong episodes portray just how dark and dreary the great outdoors can be when a person is deep in the woods, inside an abandoned house, or along the shores of a sleepy lake, and every snap of a twig and unidentified rustle can be a sign of danger. ID's signature storytelling interweaves commentary from local authorities, true-crime experts, and psychologists, plus first-person accounts from survivors of these crimes.

Chilling scenarios unfold in this true-crime series, which tells actual stories of people who shared their lives with loved ones who became killers. Each hourlong episode puts viewers in the shoes of the loved one, who first notices that something is amiss, interprets the puzzling signs and clues, and eventually comes face-to-face with the horrible truth: that the person has a very dark side. Exclusive interviews and firsthand accounts of the critical moments leading up to the vicious acts showcase devastating, often undiscussed consequences on the people who have nurtured, loved and raised a murderer.

No matter how complicated or seemingly straightforward a murder investigation may be, experienced law enforcement personnel always employ tried and tested methods to catch their prey. Documenting witness statements, pouring over forensic reports and crime scene photos, nailing down the timeline, and keeping an open mind about the causes and possible perpetrators of a crime are essential to an investigator's success. "Six Degrees of Murder" delves into another essential element that could be the difference between a solved case and a cold one. Featuring stylized re-enactments, each hourlong episode details how investigators untangled a complicated web of relationships before cracking a murder case.

"Betrayed" reveals chilling stories of chasing the American dream and how the veneer can dramatically crumble, ending in murder at the hands of a trusted family member, co-worker, lover, or friend. The cases of deception are told through the lens of the fictionalized, first-person perspectives of the victims. As investigators, family, and friends peel back the layers and facts of each case, the otherworldly narrator already knows where the trail ends. The narrator guides viewers through various relationships, raising suspicions about who will commit the ultimate betrayal.

The proverb "home is where the heart is" most definitely doesn't apply in this true-crime series, which is set in otherwise quiet suburban residences that become anything but welcoming. The preyed upon believe the walls of their home provide a safe haven, but down dark corridors and behind the veneer of thin glass lurks unimaginable horror. Hourlong episodes paint pictures of tension-filled scenes, adding up to crime stories told via stylized re-enactments. In first-person interviews, viewers hear from family and friends of the victims and law-enforcement personnel familiar with the investigations.

There's a reason murder investigations don't begin with preconceived notions. Sometimes those least expected to be capable of committing such dark deeds -- respected role models and trusted members of the community -- can have a sinister side. "Unusual Suspects" documents baffling, challenging investigations, actual cases that were anything but cut and dry. Episodes feature in-depth interviews with leading law enforcement personnel combined with stylized re-enactments, illustrating how illusive offenders evaded capture for years before being undone by persistent police work.