Wealthy people hire hit men to dispose of troublesome loved ones.

Jealousy turns into an obsession when less-fortunate people kill the wealthy in order to walk in their shoes.

Rich, pampered children become ruthless killers.

Millionaires fall for lower-class workers who turn out to be greedy killers.

Refusing to obey the "Lord of the Manor" can have deadly results.

When falling out of love leads to splitting assets worth millions, spouses kill to cut their losses.

Affluent people kill to further increase their wealth.

Wealthy heirs destroy human lives.

Family members disregard kinship over money matters.

People are willing to kill for wealth.

Killers believe that when the trail is cold, they are above suspicion.

These families are driven by passion and money.

These women thought they had found it all: the man, the millions and the house, in a modern-day fairytale that became a nightmare ending in murder.

Shocking crimes that rocked the world; stories of murder, greed, royal connections.

A perfect family man and a treasured member of the community hide dark secrets.

His millions give them all they could ever want, but in reality the man meant to be their greatest protector becomes their greatest enemy.

Two brothers grow up to make millions, but darkness follows as both end up the victims of cold-blooded murder.

A man posing as a doctor kills a woman and then buries her body at his home; all is not as it seems when a family is found dead.

One doctor lies dead after a stabbing and another is guilty of murder.

A woman is found dead in her bathtub; a man fails to return home following a business trip.

A woman is stabbed 23 times when her fairytale marriage turns sour; police find blood in the home of a missing man.

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.

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.

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."

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.

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.

Aphrodite Jones' numerous true-crime books have captivated readers for years. Now, the best-selling author and criminal profiler brings her uncanny instincts to this series that focuses on the compelling cases that commanded the headlines. From the unsolved murder of child beauty-pageant contestant JonBenet Ramsey to the strange circumstances surrounding the deaths of singer Michael Jackson and model Anna Nicole Smith, Jones presents her expert take on the crimes, often accompanied with startling new footage, evidence and interviews.

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.

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.

An exploration of how people and communities are changed by crimes that occur in their midst.

While other true crime dramas follow a murder investigation to the ultimate end of revealing who committed the crime, this series leaves the conviction to the viewers. The stories are told by the deceased victims using fictional dialogue and a narrator who knows everything, including who is responsible, but doesn't come out and say it. Instead, as the mystery unfolds, the viewer is left to pick out the clues given throughout the show by friends, family members, and law enforcement officials and come to the conclusion on their own.