In The Two Towers, Grima Wormtongue (Brad Dourif) is the wizard Saruman's spy in Rohan. An advisor to King Theoden, Grima's task is to keep Rohan weak, and through his manipulations, Saruman is able to cast a deadly spell on Theoden, sapping his will and reducing him to nothing more than a pawn whom Grima can easily control. When the Fellowship arrives in Edoras, the capital of Rohan, Gandalf uses his magic to liberate the bewitched ruler from Saruman's control.