Someone's at the Door: Part 1 - Who Killed Holly Branagan?

In part one of this 2-part episode, teenager Holly Branagan is alone in her Pennsylvania home on a Wednesday afternoon in March 1979 – She’s talking on the phone to a friend when the call is interrupted by a knock on the door. This sweet, 17-year-old girl doesn’t recognize the danger when she tells her friend… Someone’s at the Door…