Mary Sibley (née Walcott) is the female protagonist villain of Salem. She is the wife of George Sibley, former lover of John Alden, and the most powerful Witch in Salem. She became a witch after she sacrificed her unborn baby to Satan in exchange for powers, which led to her becoming the most powerful witch in Salem.
Throughout the series, her actions have been invoked by both her love for John Alden and her revenge against the Puritans who she believes took away everything she loved, causing her to make irrevocable choices. However, she still has a moral compass and a deep love for those she seeks to protect, such as when John is put under trial for being a witch, she saves him from being hanged revealing she is a witch
She is portrayed by British actress Janet Montgomery.
The Miracle Elite Storyline[]
Trouble in London[]
Mary Sibley debuted as a member of Dorian and Vaisey's ensemble, along with Jack the Ripper and other former main antagonists. Robert Hirano kept her into her dark side.