Unusual Suspects - Season 6 (2014)

When a business traveler is found dead on the floor of his locked hotel room, a Texas detective and a veteran private investigator must think outside the box to solve the mystery and bring a remorseless killer to justice.

In 1997, a California mountain town is stunned by the murder of a longtime resident. Did a neighbor strike her down, or had big-city violence invaded the close-knit enclave? Months of dogged investigation bring the case to a shocking conclusion.

When the brutalized body of an eight year-old boy is found in the woods outside Gary, Indiana, investigators begin a decades-long search for a sadistic child-killer.

A businessman comes home to find his wife brutally murdered; investigators close in on a remorseless killer.

In early 2000, the body of Genevieve Tetpon is found stabbed and discarded off an Anchorage, Alaska highway. Was she the victim of someone in her life, or the latest target of a serial killer? Years later, a hidden clue blows the case wide open.

In 1980, a teen girl is brutally murdered in her Colorado home. In her brave efforts to defend herself, the victim leaves investigators a clue-her attacker's blood. Years later, tireless investigators expose a killer that no one could have predicted.

The story and investigation of Teresa Joann "Teri Jo" Bradish's murder.

Fear grips the students of Southern Illinois University when the violated body of senior Susan Schumake is discovered near a popular campus trail. Years of tireless investigation finally reveals a remorseless killer.

When a daytime robbery at a popular nightclub leaves one employee dead and two critically wounded, Arlington, TX investigators are in a race against time to find a brazen killer who can only be identified by his critically wounded victims.

Beloved grandparents are found murdered in their home in Lake Oswego, Oregon. Are they victims of a spree killer, or was their murder carefully plotted? Investigators slowly uncover the shocking secret behind the community's very first homicide.