While performing a welfare check, police stumble across a brutalized body hidden inside a garden shed; while this is a shocking find, another family member had perished on this same property just two days prior to the welfare check.

In Logan, Ohio, investigators receive word someone has been kidnapped from their job at the bank in a car that resembles a police cruiser; eventually, detectives discover a very personal connection between the victim and the kidnappers.

In Montgomery, Ala., high society plays host to an uninvited party guest; murder is on the menu when one family's distrust and finger pointing lead detectives on a cross-country trek for a killer.

A homeowner is found dead in a driveway, riddled with bullets; the claims of a family member who allegedly witnessed the brutal attack raise more questions than answers.

In the Blue Ridge Mountains of North Carolina, community pillars are pulled into a quagmire of affairs, abuse and embezzlement leading to murder.

In Pueblo, Colo., police are called to a horrific scene where a fire reveals the charred remains of a body; as detectives work to track down the killer, their investigation uncovers cracks in the foundation of a large, multi-generational family.

In Little Washington, N.C., old money combines with a get-rich-quick attitude to put a family in jeopardy.

Affairs, lies and explosive arguments lead to an early grave for the member of a Detroit family.

A frantic 911 caller informs police he's found a family member dead; at first, it looks like a case of suicide, but a deeper dig reveals a secret world of sex tapes, broken promises and unfathomable motives.

In the Pacific Northwest, a family appears to have it all until a stash of guns and a secret video reveal the face of a diabolical killer.

In Honesdale, Pa., a family copes with teen pregnancy, addiction and heartache, then someone from the past stirs the pot to bring about a murder.

In Nebraska, a once-happy family is frayed by anger and jealousy when an illicit affair comes to light, and a tattoo seals the fate of more than one member of this family.

In southern Oregon, a weekend in the woods turns into a nightmare for the family of a local businessman; over the weekend, open marriages and forbidden relationships lead to a watery grave for one of the campers.

In Bigfork, Mo., two random-appearing murders turn out to be connected in a shocking way.

In Ore City, Texas, firefighters extinguish a burning truck to reveal the charred remains of a human corpse inside; it soon becomes apparent that this fiery incident was no accident.

Lottery winner Jeffery Dampier is living the American dream until his winning streak ends in murder.

The Sanchez family seems to have it all until one member is found dead.

The McNeil family lives a happy life until a member of their family is murdered and a relative's conspiracy surfaces.

NYPD detectives discover a bullet-pierced body stuffed into the trunk of a car and quickly find themselves drawn into a dark tale of brotherhood, backstabbing and betrayal.

While carrying out a welfare check on Thanksgiving Day, police discover a triple homicide; to unmask the killer, detectives must uncover a victim's secrets and examine a hidden world of disinheritance, rage and dark accusations.

Responding to a home invasion, police find one family member has been killed while another has been left in critical condition; it doesn't take long for detectives to start suspecting the culprit could be someone very close to home.

From blushing brides turned cold-blooded killers to smitten grooms with shocking dark sides, "Fatal Vows" examines the criminal psychology behind deadly divorces. Guiding viewers through actual stories of love gone wrong are psychotherapist Stacy Kaiser and forensic/clinical psychologist Dr. Brian Russell, who examine each couple to better understand how the marriage turned from flawed to fatal. Stylized re-enactments are supported by interviews with family, friends, law enforcement, and potential victims of the crime, while Kaiser and Dr. Russell provide analysis on unions that break down until divorce and murder collide.

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.

"Who the (Bleep) Did I Marry?" tells the real stories of men and women who lived happy, seemingly normal lives with the people they loved -- and who they thought they knew. When a clue or mishap causes them to dig further into the secret lives of their spouses, the shocking truths lead them to wonder who it is they really fell in love with. These stories include husbands with multiple families, spies working under cover, those who steal thousands of dollars, and others whose double lives include murder.

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.

Actual murder cases from the 1950s and '60s get sleek, cinematic treatment in this series, transporting viewers back to a pre-forensics era when sometimes it was more about how suspects looked than what they did that determined guilt. Narrative by a fictional bystander -- who "knew" the victim -- drives the hourlong episodes, while reporters who covered the case explain how the events impacted society. Artfully crafted re-creations play out like period thrillers, staying true to fashions and styles, while spotlighting cultural taboos and social norms surrounding each case.

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.

Veteran journalist Paula Zahn steps out of the studio and into the field to unravel criminal investigations, tracking the drama of each story by featuring the opinions of those closest to the case, including law enforcement officials, the families of the victims and the incarcerated, lawyers from both sides, and first-time TV interviews with convicted murderers.

Dark dreams see the light of day in "Your Worst Nightmare," a typical Investigation Discovery true-crime series complete with jump-out-of-your-seat moments and chilling conclusions. Classic suspense film techniques highlight re-enactments of creepy, harrowing crimes, as victims' darkest dreams become unfathomable realities. Each hourlong episode features one story interlaced with commentary from law enforcement, criminal justice professionals, and psychologists, plus accounts from friends and family of the victim.

Things aren't always as they seem. "Deadly Affairs" drives that point home with true stories of romances gone terribly wrong. Whether it's a love triangle that violently collapses or a workplace affair that implodes, the re-enactments -- two per episode -- allow viewers to knock down closed bedroom doors, navigate secret trysts, and witness salacious liaisons. The stories contain first-person accounts from friends and family of the victims, and commentary from authorities and true-crime experts. Best yet? It's hosted by Emmy-winning actress Susan Lucci, who's been a part of a few steamy scandals and deadly dalliances in her daytime soap career.

Lt. Joe Kenda spent 23 years in the Colorado Springs Police Department, where he amassed a lifetime of memories catching killers and helping solve close to 400 homicide investigations. The vivid memories are brought back to life in this hourlong series, as Kenda reopens his "Murder Books" for viewers -- folders in which every detail of his murder cases is held -- to revisit the most disturbing cases still haunting him today. As he details the process of how he solved the crimes, Kendra also embarks on a personal journey, coming to terms with long-suppressed nightmares. As he says, "I don't want to tell these stories. I need to."