A Christian couple open up their home to a young woman who needs help; however, their act of charity has unexpected consequences when emotional support gives way to physical attraction, and a lustful affair turns deadly.

A college student's new husband has a dark past that rears its ugly head and ends in a double homicide.

Teenagers keep their high-school romance a secret from a domineering father with traditional values; when the truth comes out, a heartbreaking choice between love and family brings devastating consequences.

Love and tradition collide when a young woman falls for a handsome stranger; she knows she must keep her relationship hidden from her orthodox father and protective brother.

A female boxer enters a forbidden relationship with her trainer, then she tries to leave his controlling grip and finds herself fighting for her life.

A fortuitous arrest leads to the identification of a new suspect in a young woman's unsolved murder, then an explosive confession of forbidden love causes everyone to reevaluate everything they know about the case.

When lonely teenager Meagan Grunwald meets handsome 26-year-old felon Angel Garcia, it's love at first sight, but their whirlwind romance spirals into a hurricane that leaves a trail of death and devastation in its path.

A teenage boy's traditional parents try to keep him away from his girlfriend by moving him to another country, but the distance only serves to make his heart grow fonder, and he will stop at nothing to be reunited with his girl.

A young mother falls for a married military man after a chance meeting at his naval base.

A teenage girl falls hard for an NYPD officer; he promises to make all her dreams come true, but when affairs of the heart are complicated by the letter of the law, someone will pay the price.

A decorated U.S. Marine falls for a married woman; suspicion and jealousy plague their affair, and the stakes are so high, they'll stop at nothing to keep it hidden from their spouses.

Violin prodigy Lia Tricomo seeks the help of therapist John Alkins, and they connect over a shared love of music; when Alkins finds it impossible to resist his troubled patient, the consequences of indulging his forbidden passion will prove deadly.

Two teenagers enter into a secret relationship against a father's wishes.

A Filipino woman falls for a married U.S. Navy officer who will do anything to hold onto his mistress and his money.

In a West Virginia jail, an inmate finds love with a guard, but it comes at a tragic cost.

A Christian woman's faith is tested when she falls in love with a charming new female coworker; as the lovers fight for their love in a community that doesn't want them, the pressure proves to be too much, and the consequences are deadly.

When Montreal teenager Zainab Shafia meets Ammar Wahid, it's love at first sight, but their relationship is forbidden by her strict father who will stop at nothing to ensure his daughter obeys his rules of honor.

A woman searching for acceptance from her family unexpectedly finds passionate love with her uncle; when their families turn on them, they flee to start a new life in paradise.

Two married church volunteers put their faith and families on the line for an affair that leads to expulsion from their church and community; they vow to stay together, then love gives way to jealousy.

Iraqi-American teenagers, Noor and Marwan, are from feuding households, but they fall in love despite Noor's family's opposition.

A young college student enters into a secret affair with a police officer.

What really happened, and why? Finding out the facts about any crime may simply depend on whom you ask. In "Shadow of Doubt," Investigation Discovery puts a wrinkle on true-crime storytelling by examining competing theories of complex cases. In these instances, witnesses and suspects point the finger at one another, and every possible account must be considered before the shocking final truth can be discovered.

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.

Inspired by HBO's acclaimed drama "True Detective," Investigation Discovery brings to life actual homicide cases through the words of the law enforcement officers who are still haunted by them. "Real Detective" blends documentary and scripted elements -- and narratives driven exclusively by the detectives themselves -- to create cinematic true crime TV, with featured guest stars including Michael Madsen, Devon Sawa, Curtis Caravaggio and Zoie Palmer. Each hourlong episode ventures deep into the mind of a homicide detective as he or she describes in vivid detail the one case forever ingrained in the memory.

"Who Killed Jane Doe?" presents a unique journey of discovery, loss, mystery and resolution. Featuring Investigation Discovery's distinctive stylized re-enactments, each hourlong episode weaves together two parallel stories: that of detectives who gather clues to identify a victim and the manner of death, and that of a family who knows very well who the victim is and is struggling to find her. The emotional tales honor the nameless and offer a final resting place to a missing loved one.

If someone told the women featured on "Wives With Knives" to cut the men out of their lives, the women took the advice literally. The series recounts real stories of women who stabbed their significant others, some of them fatally. The motivations for committing the crimes varied -- many of the attackers reached their breaking points after years of sexual, emotional and physical abuse, while jealousy and greed were primary factors for others. The series' host is criminologist, behavioral analyst and attorney Dr. Casey Jordan, who talks with the femme fatales on the series to add depth to the stories.

If you're going to do the crime, you might as well do it with passion. "Scorned: Love Kills" is perfect Saturday night TV for those who prefer a voyeuristic peek into how lust and obsession can destroy lives. From dalliances with strip-club dancers to teachers falling for their students, the stories featured in this series mix sexual intrigue with bedroom betrayal to form a scandalous recipe for murder.

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.

Premeditated crimes committed by people motivated by love.

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.