Song of Susannah (Dark Tower)

The Dark Tower VI

Susannah, now pregnant, has yet another taking control of her. The demon-mother, Mia, uses Susannah and Black Thirteen to transport to New York City of 1999. Jake, Oy, and Pere Callahan must rescue Susannah while Eddie and Roland transport to the Maine of 1977. A vacant lot in New York is the prize that must be saved and ties these together. (source)