What Happened to Michelle Arnold-Boesiger? Missing Illinois Woman Found Dead Inside U-Haul Storage Unit

Case of Oklahoma Teen, Found After Going Missing, Puts Spotlight Back on Missing Mom, Who Vanished 5 Years Ago

Missing Colorado Hiker Josh Hall's Dog Found Alive, Bringing a Sign of Hope to Family

Body in Suitcase Found Near North Carolina River Not Far From Where Pregnant Woman Went Missing, Police Say

Workers Inspecting of Sacramento Storm Drain Discover Skeleton, Beginning Multi-Agency Effort to Solve Mystery

Who Killed JonBenet Ramsey? ‘20/20’ Special Probes Little Girl's Killing

Mystery as Florida Man Found Dead and Search for His 'Endangered' Missing Girlfriend Continues, Police Say

5-Year-Old Missing Oregon Boy Is Saved After Barking Dog Alerts Police to His Whereabouts

Missing Elderly Man's Dog Helps Off-Duty Officer Find Him After He Crashed His Car in New Jersey Woods

Savannah Spurlock Case: What to Know About Kentucky Mom Found Dead After Leaving Bar With 3 Men