Song of Susannah

Song of Susannah is the second-to-last book in Stephen King's Dark Tower series.

Taking place mainly in our world (New York City and East Stoneham, Maine), the ka-tet are split up in different places and different 'whens' to find out more information pertaining to their quest of the mysterious Dark Tower. Susannah's trapped in her own mind, while Mia, the former demon and now a very pregnant white woman, has taken over her body in the summer of 1999 in New York. Mia tells Susannah she has made a Faustian deal with the man in black to be truly human and produce a child. Jake, Oy, and Callahan follow her to try to stop the birth of Mia's baby and save Susannah. Roland and Eddie travel to Maine in 1977 to buy a certain vacant lot in New York, and talk to a young author named Stephen King.

King's imagination is so powerful that it is tearing open holes in reality called "thinnies". Unspeakable creatures called "walk-ins" are coming through and plaguing the community. The author is unaware of this and has never seen one, though most of the walk-ins have been appearing on his own street. The gunslinger and Eddie have to justify their own existence at one point to this dubious god.

"Song of Susannah" is more action and explanation than the previous books in the series, leading up to the final cliff-hanger before the series' epic conclusion.