So, who is the (un)lucky lady?

Amy Acker

Amy Louise Acker is an American actress. She played Winifred Burkle and Illyria on the TV series Angel and Kelly Peyton on Alias. Between 2012 and 2016, she played Root on Person of Interest, having become a series regular during the third season. In March 2017, Acker was cast as Kate Strucker in the pilot for the prospective Fox television series The Gifted which was picked up to series in May 2017.