Piper reveals she is the biological daughter of Maggie Duval and Brandon James, making her Emma’s half-sister. She was given up for adoption and grew up resentful of Emma’s "perfect" life while she felt abandoned.

The episode ends with a massive twist involving .

This suggests Audrey was Piper's accomplice or at least helped her coming to Lakewood, casting doubt on her "victim" status and setting up the mystery for Season 2. Guide for Viewers

After a struggle on the dock, Emma shoots Piper in the forehead, ending the immediate threat. The "Revelations" Cliffhanger