Nightline

New Details on South Carolina Shooting Cop's Past; In 'Lip Sync Battle,' Celebrities Go Head-to-Head; Hunting 'River Monsters' and Big Adventure

Tensions Between Police, Protesters Boil in Baltimore; Cleveland Kidnapping Survivors on How They Survived, Moving Forward

Emotional Reunion Between Mother, Daughter Placed for Adoption; BASE Jumpers Fly Off Dubai's Tallest Residential Building