A mother arrives home to have lunch with her teenage daughter and walks into a nightmare she will never forget. On the Case with Paula Zahn investigates tonight at 10/9c. | Investigation Discovery

A teenage girl disappears on her way to visit friends. As police retrace her last known movements they uncover a terrifying possibility, the 16-year-old may have been kidnapped by an international human trafficking ring. Join us for On the Case with Paula Zahn tonight at 10/9c. | Investigation Discovery

When a young woman disappears on a cold night in Breckenridge Colorado, one of the state's darkest mysteries begins. Join us for On the Case with Paula Zahn tonight at 10/9c. | Investigation Discovery

When a young mother vanishes, her trail goes cold. Until a shocking discovery reveals that history repeats itself. On the Case with Paula Zahn investigates tonight at 10/9c. | Investigation Discovery

Police must solve the murder of young mother who was savagely strangled to death in her bed, while her two young sons slept just steps away. Decades of investigation reveal an unthinkable betrayal of trust. Join us tonight at 10/9c for “On The Case With Paula Zahn” on ID | Investigation Discovery