Unsolved Mysteries - Season 4

In the criminal justice system, sexually-based offenses are considered especially heinous. In New York City, the dedicated detectives who investigate these vicious felonies are members of an elite squad known as the Special Victims Unit. These are their stories.

The Librarians: The Next Chapter centers on Vikram Chamberlain, a "Librarian" from the past who time traveled from 1847 and now finds himself stuck in the present. When Vikram returns to his castle in Belgrade, Serbia and discovers that it is now a museum, he inadvertently releases magic across the continent. With the help of a new team of eclectic heroes, including a savant in world history, a scientific genius, and a highly skilled Guardian, Vikram has only six months to clean up the mess he made.

In the midst of an international crisis, a career diplomat lands in a high-profile job she's unsuited for, with tectonic implications for her marriage and her political future.

Tracker features lone-wolf survivalist Colter Shaw, who roams the country as a "reward seeker," using his expert tracking skills to help private citizens and law enforcement to solve all manner of mysteries while contending with his own fractured family.

John Sugar is an American private investigator on the heels of the mysterious disappearance of Olivia Siegel, the beloved granddaughter of legendary Hollywood producer Jonathan Siegel. As Sugar tries to determine what happened to Olivia, he will also unearth Siegel family secrets; some very recent, others long-buried.