48 Hours investigates the 1973 murder of 11-year-old Linda O'Keefe. For nearly 45 years, the case remained unsolved until an innovative Twitter campaign helped in the quest to find Linda O'Keefe's killer.
Starts: Maureen Maher, Maureen Maher, CeCe Moore, Erin Moriarty, Erin Moriarty, Richard Schlesinger, Tracy Smith, Richard Schlesinger, Peter Van Sant, Tracy Smith, Peter Van Sant