The supernatural thriller, which will be produced by Michael Bay's Platinum Dunes company, revolves around a girl haunted by the soul of a boy who died in the Holocaust.
Gary Oldman and Cloverfield's Odette Yustman are already among the cast.
Oldman plays a Rabbi who helps exorcise Yustman's tormented character. Good stars as Yustman's best friend, with Gugino playing her mother.
Alexander is to play a Holocaust survivor, Elba a priest and Coiro a college professor.
Production on Unborn begins today in Chicago.