In Bram Stoker's "Dracula," Jonathan Harker's journal serves as a pivotal narrative device that captures his experiences and evolving perceptions throughout his journey. Initially, Harker, a young solicitor, travels to Transylvania to assist Count Dracula with a real estate transaction. His early entries reflect curiosity mixed with unease as he encounters strange customs and superstitions among the local villagers who warn him against visiting the Count's castle. As Harker spends time in Dracula's unsettling abode, the tone of his journal shifts dramatically. He describes bizarre occurrences, including his confinement and the Count's eerie behavior. Slowly, he becomes aware of the supernatural dangers he faces, which instills a sense of dread and urgency in his writings. This shift showcases his psychological transformation as he grapples with the reality of his situation. Ultimately, Harker's journal not only documents his personal descent into fear but also frames the larger narrative of "Dracula." His detailed observations provide insight into both the Count's monstrous nature and the gothic atmosphere of the story. Through Harker's eyes, readers experience the horror and tension that define Stoker's classic tale, making the journal an essential element of the novel's structure and impact.