Season 21

When a beloved Wisconsin father disappears, his wife blames drugs, but close friends suspect a violent confrontation that ended a marriage filled with secrets.

A churchgoing southern woman loses her husband to tragedy, but a cloud of suspicion haunts her new marriage and leads investigators to a new conclusion.

A violent home invasion leads to suspicion about the victim's stepdaughter and a mystery man, but a startling confession reveals a more intimate betrayal.

An in depth look at the life and crimes of master manipulator, and monster, Drew Peterson. Peterson is currently serving time for the murder of his third wife while the search for his fourth wife Stacy continues.

A popular cab-driver is shot dead on the job, but the search for his killer reveals his wife’s secret prison visits, a torrid affair and a possible conspiracy.

Tupac and Biggie once friends, became embroiled in a collision course that ended in tragedy. Loved ones and insiders give personal accounts of the pivotal six day period between Tupac's shooting and his tragic death.

The murder of a beloved widower leaves police wondering what secrets his marriage, to his much younger new wife, might be hiding.

An Air Force sergeant is gunned down in his garage revealing an elaborate conspiracy with an unlikely mastermind.

Police must unravel a mystery involving an Arizona couple, cross-country romance and a deadly plan.

Halloween becomes a real-life horror story when police discover a beloved mother of four murdered. The panic intensifies as the investigation turns into a case populated by demons, masks and a potential psychopath on the loose.

On Halloween night a knife-wielding intruder attacks and kills two roommates and leaves another lucky to be alive. Although the story is reminiscent to the plot of a horror film - for this California town the terror is all too real.

Trick-or-treaters in a small Indiana town have no idea that the sweet grandmother passing out candy is also hiding a deadly secret in her garage.

After a massive Halloween bash ends with a young woman's mysterious disappearance, a tiny farming town fears that evil stalks its fields.

Helen's boyfriend goes missing just as authorities find a dismembered torso, but is it case closed? Or 20 years later, is Helen's new story a game changer?

The death of a police officer leads to a search for her killer. Is her shooting payback for an old arrest or is it much closer to home?