Mercy Lewis (Salem)

Mercy Lewis is a main character and recurring antagonist in the WGN America thriller TV Series, Salem. She is a girl with strange afflictions done by an unknown tormentor, who is later revealed to be none other than Mary Sibley. She later becomes a witch and swears to get revenge on Mary for all she has done.

Trouble in London
Mercy was behind the plot by using Homura Akemi and Mary sibley as puppets.