An all new '48 Hours' Saturday May 17, 2019

48 HOURS on CBS. The next episode is called, "What happened to Rachael?" that will air this Saturday at 10/9 p.m.

CBS says, "A popular teacher is gunned down in a quiet Pennsylvania city. Who would want her dead? Turns out, there might be a few. '48 Hours' correspondent Erin Moriarty investigates."