For more than 25 years, Dateline has brought viewers investigations into some of biggest mysteries in America. This entry in the franchise takes a second look at some of the most mysterious cases of recent history. It explores the stories through firsthand accounts told by people who are close to the crime, including investigators who dedicated their time to the cases and family members who are still trying to confront the tragedies that befell their loved ones.

From Executive Producer Dick Wolf, this true crime investigative series follows veteran prosecutor Kelly Siegler, and her rotating team of seasoned detectives, as they travel to small towns across the country and help local law-enforcement agencies dig into unsolved homicide cases that have lingered for years without answers or justice for the victims due to lack of funding and proper forensic technology.

The fascinating cases of every day, seemingly average moms, wives and girlfriends accused of murder. Did they really do it? And if so, why?

A cast of young women, who recognize that their outrageous behavior has hindered their relationships, careers and lives, are brought together in a beautiful mansion. They claim they want to change, but will living together help them move forward and turn their lives around – or will chaos rule?

This extension of the long-running true-crime series 'Snapped' shifts the focus to couples whose passion drives them to commit terrible criminal acts. Using re-creations and gripping firsthand accounts, each episode takes a deep dive into a case, telling the story of the couple's romance, how the relationship evolved from love to manipulation, and what ultimately drove the couple to commit the crime.

True-crime stories about unfortunate victims found buried in the most unlikely of places -- the backyard.

Shocking true stories involving sex, money, murder – or a fatal cocktail of all three. Told through in-depth interviews, reenactments and archival footage, each hour-long episode delves into an edgy mystery filled with expert detective work, unexpected turns and stunning revelations.

An up-close and personal look at a team of 911 dispatchers at a call center just outside of Cleveland where they take on a never-ending bombardment of panic-stricken callers and save lives.

Portrayal of the horrifying cases that highlight the boundaries between gentrified Southern dynasties, hip-hop hustlers and the flashy nouveau riche of this metropolitan mecca of music, entertainment and tech. Told by the investigators, witnesses, reporters and loved ones who have direct connections to the cases, each hourlong episode brings Atlanta's hustle and deadly decadence into sharp focus. It's the dark side of the New South, where deadly battles for status and affluence emerge between those who are willing to kill for the good life and those willing to kill to keep it.

A deep dive into some of the most chilling murder cases in New York City's recent history. New York City is a shining beacon of opportunity for people across the world and a true melting pot. It's a city with a gritty core, where tensions run high. A series of details to the brazen crimes that could only happen in New York and the intense work by law enforcement and civilians who race to take murderers off the streets.

Performers compete for a multi-episode guest-starring role on season three of hit series Glee. Over the course of the competition, the winner will be determined from eliminations of twelve finalists and be awarded a role in a seven episode arc as part of the cast of Fox Network's musical drama series Glee.

A series of reports chosen by "Dateline" correspondents that answers the question they most often get asked — what their most memorable story is and why.

The Janice Dickinson Modeling Agency was a reality television series that debuted on Oxygen on June 6, 2006. The show completed four seasons, through which it followed the self-proclaimed world's first supermodel Janice Dickinson as she took on the role of a modeling agent to her own eponymous agency, also called The Janice Dickinson Modeling Agency, which opened for business in November 2005.

The first season follows her opening of the agency, including the difficulty in finding models of Janice's vision, getting them proficient in front of the camera, obtaining financial backing and establishing a reputation for her agency. Subsequent seasons followed the development of the agency and a constantly changing cast of models. A number of the male models are openly gay, and a number of the agency's clients are gay-oriented businesses. This resulted in many of the episodes being gay-themed.

Oxygen aired a one-hour holiday special to bridge a gap between the first and second seasons, entitled Christmas with the Dickinsons.

In the UK, there was to be a British version of the show with supermodel Paula Hamilton as the agency head. Like the American version, the show was to be titled after the lead. It was to be shown on the cable channel Living, which is also the home of the Top Model franchise in UK. After much planning, the show was canceled due to a lack of interest in the American version.

Good Girls Don't is a sitcom created by Claudia Lonow and produced by Carsey-Werner-Mandabach which stars Bree Turner. It was cancelled eight episodes after it premiered in 2004.

Tori & Dean: Home Sweet Hollywood is an American reality series on Oxygen. The series debuted on March 20, 2007. The first and second seasons of the series were titled Tori & Dean: Inn Love. The show was renamed Tori & Dean: Home Sweet Hollywood as of the third season.

As of November 2012, the series has yet to be renewed for a seventh season.

A true-crime series that examines the story of sadistic and meticulous killers who plan their victims’ murders for weeks, months or even years. Each stand-alone episode is brought to life through a tapestry of firsthand interviews with investigators and those close to the victim. Over the course of the hour, we’ll follow detectives on a winding investigation.

Faith Jenkins investigates burgeoning romances from their sweet beginnings, and follows what happened all the way through to their bitter endings. With her background as a criminal prosecutor in the Manhattan District Attorney's Office, and her expertise in matters of the heart, Faith gives her professional POV of the nightmarish cases. With firsthand accounts from victims' family, friends and law enforcement, each episode reveals the inner workings of intimate attachments that seemed fated to last forever and ended in murder.

Exploring the unbelievable true stories of suspicious deaths by retracing the investigation from start to finish, dissecting the red flags and undeniable evidence, and strange behavior that put the tragedy in question.

The holidays are meant to be a time of festive cheer when family and friends come together to celebrate the season. But when family members are forced to occupy the same space for too long, the joy and merriment can often morph into anger and resentment.

Horrific and salacious cases rock Southern California's wealthy coastal community. From a murder-for-hire gone wrong to families turning on their own, viewers hear the harrowing tales of when privilege leads to problems and greed leads to murder.