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

June 4, 1999. It was a warm afternoon in Washington D.C. when police were called to a home in the city's Capitol Hill area. When officers arrived at the scene, they discovered the bloody, lifeless body of 51-year-old Dennis Dolinger, lying in his basement. Dolinger had been stabbed multiple times in the head and although police couldn't find a murder weapon, the pattern left in the wounds appeared to have been made by the tip of a phillips head screwdriver. Blood evidence at the crime led upstai

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