After an Amish wife is found murdered in her bed, police uncover a dark world they never imagine existed; in this devoutly religious community, a lothario has gone to great lengths to get what he wants.

When the body of a 9-year-old boy is found by the side of a rural highway, it takes police two years to identify him; the mystery puts police on the trail of an Amish serial killer.

After Katie Gingerich is found murdered and disemboweled, police investigate whether a crisis of faith led to the brutal act.

Naomi Huyard never strays far from home, so her disappearance rocks her tight-knit community to its core; when detectives make an unspeakable discovery, they soon realize there's more to the story than meets the eye.

A Mennonite family man is stopped for drunk driving, leading to the exposure of an organized crime network; Abraham Wiebe risks it all as a central figure in one of the largest criminal cases in Oklahoma history.

Police don't know what to make of a man's confession after he tells them he murdered his long-dead wife.

The reality series "Breaking Amish" provides a unique look into the lives of young men and women who break free from their Amish or Mennonite traditions to pursue dreams of an "English" life in New York City and Brooklyn, N.Y. They get to wear jeans, use electricity, and spend time in places that serve alcohol -- all first-time experiences for them -- but taking advantage of Western luxuries has its disadvantages. The cast members likely will be abandoned by their families if they commit to living full-time on the outside, and even if they return to their previous lifestyles, they risk being shunned by their community altogether. The choice is theirs, and they know it comes with potential lifelong consequences.

Life-changing decisions are not easy, especially when consequences mean one's disassociation from one's culture. The 10-episode documentary "Amish: Out of Order" follows those who have chosen to leave their familiar life for more freedom and opportunity -- despite the decision to live among "the English" preventing them from further contact with the community. The series spotlights Mose Gingerich and his efforts to help former followers of the faith. At 22, Gingerich himself left and moved to Columbia, Mo., where his new life centers on welcoming and guiding others who share his experience.

It stands to reason that TLC wants to "return to Amish." The network got considerable traction by documenting Amish and Mennonite lifestyles and how they contrast with others today, beginning in 2012 with "Breaking Amish," its highest-rated freshman series. The profiled young men and women experienced unfamiliar cities, including New York, and now they have returned to their roots. The spinoff "Return to Amish" features some of those people -- Abe, Jeremiah, Rebecca and Sabrina -- back in Pennsylvania, where they become reacquainted with traditions while having life-changing experiences like marriage and pregnancy. Cameras also follow Kate, who chose to remain in New York to focus on a budding modeling career.

In the Amish settlement in Lancaster County, Pa., keeping the peace and carrying out justice is the responsibility of Lebanon Levi. He doesn't hold the title of police chief, yet he holds all the power of one, if not more. Levi exists above the law and occupies the role of police, judge and jury in a community that, untrusting of traditional law enforcement authorities, relies on a group of men for protection and justice. "Amish Mafia" depicts the work carried out by Levi and three of his assistants, namely keeping outside forces from infiltrating the Amish community, while keeping the principles and morality within the community in check. The Amish church, according to Discovery, denies the existence of this unique "police" force, so the network says some identifying information in the series has been changed, and some scenes are re-enacted.

Investigation Discovery's "The Murder Tapes" chronicles homicide investigations using raw and unfiltered footage, including body-cam, surveillance and interrogation-room footage. Family members react in real time, investigators give their first impressions at crime scenes and suspects protest their innocence before coming clean. Viewers see and hear it all, getting up-close and personal with real-life murder investigations. Episodes track cases from start to finish, proving that the truth wins out when tapes roll.

On Nov. 3, 2016, Kala Brown, 30, is found chained to a wall inside a shipping container on Todd Kohlhepp's property in Woodruff, S.C. Brown is held captive for two months after witnessing the shooting death of her boyfriend, Charles David Carver, 32. Following her rescue, Brown reveals to investigators that her captor is responsible for many more crimes than the police ever suspected. Ultimately, Kohlhepp pleads guilty to seven murders. In Investigation Discovery's three-part limited series, investigative journalist Maria Awes sets out to learn the true extent of the serial killer's crimes, the ones authorities know about and the additional one he claims to have committed. Joined by former FBI profiler John Douglas ("Mindhunter") and Kohlhepp biographer Gary Garrett, Awes takes a chilling journey into the heart of darkness.

Investigation Discovery's true-crime series, "Home Sweet Homicide," explores murders committed in the sanctuary of victims' homes. Homeowners are suffused with a sense of safety after locking their doors, enabling their home security systems and turning on all their lights. However, cold-blooded killers violate this sense of safety, using it against their victims, who are taken unawares in the one place where they felt free from danger. Planning the perfect crime, home invaders become acquainted with their targets' routines and familiarize themselves with the layouts of their houses. In one episode, a young mother is found brutally murdered in her home in Chestnut Ridge, N.Y., and detectives scratch their heads over snowy footprints that lead up to her house but not away from it. In another, a top real estate agent vanishes after meeting a new client, and police must find out if anyone had a reason to harm her.

"The View" co-host Sunny Hostin brings her experience as a former federal prosecutor and current victims' rights advocate to her role as the host of a six-part series on Investigation Discovery. In the "Truth About Murder With Sunny Hostin," the legal analyst travels across the United States revisiting the country's most baffling cases. She interviews detectives, prosecutors, coroners, and victims' family members, delving into homicide cases that convulsed communities and gutted loved ones. Hostin travels to Santa Ana, Calif., where a man returned home to find his pregnant wife raped and murdered. She visits Galien Township, Mich., where a young mother was smothered to death and buried in a shallow grave near her home. She goes to Powder Spring, Ga., where a woman was shot execution-style in her kitchen. Hostin empathizes with victims' family members while highlighting the hard work of law enforcement personnel, detectives and attorneys who bring the guilty parties to justice.

From the moment a homicide is reported, a file is assembled to document every facet of the investigation -- crime scene photos, notes and observations, forensic reports, witness interviews, suspect profiles -- and continues to grow with new information until an arrest is made and conviction attained. Investigation Discovery opens these "murder books" to tell haunting tales buried within the pages. Hourlong episodes take viewers back in time with details of decades-old cold cases using actual archival footage, crime-scene evidence and first-person interviews with lead investigators, unraveling the mystery and uncovering what broke the cases open.

"Murder Board" presents real-life stories about puzzling murder cases in which the evidence board plays a crucial role during the investigations. The murder wall helps investigators visualize the evidence as they develop theories and make connections. The wall evolves throughout each episode as clues are collected, crime scene photos are amassed, witnesses are interviewed, and suspects are identified. Some of the leads on the wall go nowhere, while others lead to startling breakthroughs that help the police to crack the case.