Although the character of Renfield is ostensibly extraneous to the central plot of Dracula, he fulfills an important role in Stoker's exploration of the novel's central themes. This article will examine how Renfield's character is closely linked to the three central themes of invasion, blood and otherness. First, through Renfield's inner struggle, we learn that he is "not his own master" (Stoker, 211). The theme of invasion is revealed by Count Dracula's powers of control and occupation. Second, the recurring theme “blood is life” (Stoker, 121) is depicted throughout the novel and was interpreted through Stoker's character, Renfield. Then finally, a look at the social construction of the “other” in Dracula and how, through Renfield, who is “unlike the normal madman” (Stoker, 52), the Count emerges as the “other” of all " others ". Stoker led the reader to see the Count as physically strong and powerful, through Jonathan Harker and his confinement and Lucy Westenra and her failing health. Although the reader does not understand all of the omniscient powers and control Count Dracula possesses over people, they are brought to light through Dr. Steward's accounts of his patient RM Renfield. The “strange and sudden change” (Stoker, 86) occurring in Renfield prompts the reader to contemplate the earl's influence on the people. Dr. Steward suggests that it is as if a “religious madness had taken hold of Renfield (Stoker, 87) and was controlling him. The reader is aware that Renfield can sense the Count's presence and that there is a connection between them. This eventually causes Van Helsing to recognize Mina Harker's connection to the Count, which helps them track down Dracula and ultimately kill him. Dracula's invasion of Renfield also reveals a weakness in the Count's power. Renfield, an obedient servant of Dracula, claims that he is "here to carry out your orders, Master." I am your slave” (Stoker, 88 years old). Renfield's devotion is quickly reversed when he sees that the Count is taking Mina's life. It is his concern for her that causes him to turn against Dracula and try to fight for her. Once again, Renfield's actions mimic those of the other men as their goal becomes saving Mina from the invasion coursing through her body. The key to this invasion is blood. The central theme of blood in Dracula is paralleled in Renfield..