Learn Marten Broadcloak's deadly secret agenda and true goal - to climb to the top of the Dark Tower itself and become the overlord of all existence!

A horrified Steven Deschain learns that the deadly seeing sphere called Maerlyn's Grapefruit has been stolen from his chambers! Far worse, when he enters his wife's rooms to arrest her for the theft, his son Roland is standing over her body with a gun in his hand. The youngest gunslinger has perhaps committed the most hideous crime of all! Continuing the epic saga based on the best-selling Dark Tower novels by the master Stephen King. It's the first chapter in the most incredible storyline yet.

It's the end of Gilead's blackest nightmare as Roland and his makeshift army defend the scant remains of the barony from dread Farson's men.