Madison Lewis, is Simon's twin sister, the shy Lewis, she is known as, but unlike her twin, she has the sight. She isn't exactly a shadow hunter but she can still se everything that go's on in the shadow world. She has kept it hidden all these years, afraid someone would call her crazy, but now that her best friend is in danger, she has to use her abilities to protect the people she loves. When she meets the brooding Alec Lightwood, she wonders why she ever hid at all.