While preparing to face her attacker at court, Sandee Rozzo is gunned down in her garage; the culprit seems obvious, but, as detectives dig deeper, they learn there's nothing about this case that is cut and dry.

When a lovers' spat ends up in the hospital parking lot, a biochemist's obsession with a coworker and her murderous means are exposed.

A string of murders targeting a pizza chain and its employees leads to a nationwide manhunt for a killer hell-bent on revenge.

On the surface, Shannon and Eddie Baugus appear to have the perfect marriage, then a deadly confrontation exposes a dark history of domestic abuse.

Former NFL football player Shaun Gayle's pregnant girlfriend, Rhoni Reuter, is shot to death in her home, and investigators are faced with a long list of romantic rivals as suspects.

When police respond to a harrowing 911 call from a man pleading for his life, they are drawn into the investigation of a revenge plot more disturbing than the young victim's worst nightmare.

Police track down the killer of a gay rights activist who is stabbed to death in his own apartment in London.

Police begin receiving calls of shots fired in usually quiet suburban neighborhood; one call lands them on the phone with none other than the shooter himself, a man who police soon learn became unraveled over the sight of a few too many deer.

After Jason Horsley is gunned down in front of his home, investigators discover evidence of a neighbor's deadly plot, but it will take six years to track the killer down.

When tensions boil over between neighbors in small-town Florida, a local waitress and her family fall victim to a poisoning; investigators must track down the mastermind behind one of the most cunning murder plots they've ever seen.

When a Tennessee man is shot in front of his own home, police use home video to unravel the history of a vicious feud between rural neighbors and determine whether the shooting was self-defense or cold-blooded murder.

Even after Lonnie Paul Tracey erected a giant barricade between him and his neighbor Tony Davis, no one ever dreamed their ongoing arguments would escalate to murder.

After a mother and recovering addict is stabbed while standing up to the neighborhood bully, grainy video and unreliable witnesses stand in the way of investigators determining who was holding the knife that killed her.

A front-yard brawl between two families leaves one person dead and investigators wondering how teenage heartbreak started it all.

After police arrive on the scene of a barbeque turned bloodbath, they begin to unravel a neighborhood feud that pushed one man to the point of no return.

After Mary Ann Langley finds her husband, James, nearly burned to death in their home, investigators must race to determine if it was an accident or an assault before they lose him.

When Ann Huxley learns that her ex-husband has been found dead in the warehouse where he works, a deadly get-rich-quick scheme begins to unravel.

After Barry Odom is executed just outside his apartment complex, investigators uncover not one but two love triangles, leading them to the front door of a scorned lover who was willing to kill for love.

Jane Andrews appears to be living the dream life with her high-society beau, Tom Cressman, until he's found stabbed to death in their home.

A teen rivalry turns deadly when Rachel Wade and Sarah Ludemann both fall in love with charismatic bad boy Josh Camacho.

Beautiful Georgina Symonds knows how to bend men to her will, then she goes missing, and police discover she has pushed one man too far with fatal results.

Love is not patient, nor is it kind, and it definitely does not conquer all. As described in this six-part series, everything people thought they knew about love is wrong. Episodes detail casualties of love, including former partners, jealous friends, scorned sons and daughters, and devoted family members. The stories of love triangles, hidden affairs and family secrets, depicted via stylized re-enactments, show the transfixing power of emotion and how it can beckon the most reasonable people into criminal madness. Sometimes the most dangerous people are the ones you least expect.

"Killer Couples" is in the same vein of the long-running true-crime series "Snapped," which tells stories of people who commit murder or attempt murder, but with a focus on couples who commit crimes. Using re-creations and firsthand accounts, each episode digs into a case, telling the story of the couple's romance, how the relationship evolved from love to manipulation, and what ultimately led the couple to commit the crime. The stories range from teenage lovers who go on a multistate crime spree to lesbian lovers who want to eliminate one of their husbands.

There are manipulators in the midst, scheming right under everyone's noses. Even with people trusted the most, there may be something sinister lying beneath the surface -- a plot set in motion by someone close with a deadly motive. This true-crime series tells stories of actual murders committed not by strangers but by someone the victim knew, someone hiding in plain sight, or someone leading a double life. These wolves in sheep's clothing use deception as a weapon to try to get away with murder.

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.

Maybe it's the jealous ex, the co-worker seeking revenge, or perhaps a predator with an appetite for blood? Whatever the motives, crimes are most often solved by relentless investigators searching for the truth and following clues wherever they may lead. This series explores the emotional stories of those attempting to find closure in homicide investigations, from the victims' families to the dedicated police officers. Hourlong episodes present compelling versions of what may have happened and stylized re-enactments of events from different perspectives as new evidence emerges.

British journalist Piers Morgan travels to the U.S. to meet some of America's most notorious female killers. Hoping to discover what drives these women to commit unspeakable acts, Morgan delves into the details, meeting with family and friends from both sides of each case to find out how lives have been impacted and to gain an insight into whether or not justice has been served. He also talks with law enforcement, defense attorneys and prosecutors, often returning to the very scene of the murders. However, it's one particular chilling encounter that carries each story, as Morgan conducts a compelling interview with the killer inside the maximum security prison she calls home.

"Murder for Hire" gives an exclusive look into the dark world of contract killings, showcasing some of the most fascinating murder for hire cases ever caught on tape. In an alarming trend, investigators are seeing a sharp increase in hired hits across the country, and those attempting shockingly include: housewives, wealthy bankers, military officers and even grandmothers. From scorned lovers to jealous relatives, the show explores in rare, never-before-seen footage, how a seemingly good relationship can go wrong and the emotions surrounding the reveal when an intended victim discovers a hit has been taken on their life. Each standalone episode features a different case of undercover agents immersing viewers into the real-life sting and investigation as they attempt to catch the perpetrator and ultimately prevent a murder.

Each episode follows a new investigation and takes viewers behind the true stories of murder ignited by infidelity and deception. Featuring re-enactments and juicy firsthand interviews with friends, family and investigators, secrets reveal a tangled web of lies. With surprising twists and turns and unexpected suspects, the killers are brought to justice for these intensely personal crimes of passion.

Psychological thrillers like "Fatal Attraction" and "Unfaithful" are the inspiration behind this true-crime series, which tells stories about relationships that quickly spiral into living nightmares. Each hourlong episode is a mini horror/suspense film that depicts actual events -- seemingly innocent encounters that end up changing the course of the participants' lives forever. Viewers see the evolution of each relationship and the escalation of extreme behavior, from a refusal to let go to a web of lies and betrayals, dangerous obsessions, scandalous affairs, stalking, and almost always murder.

"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.