A mysterious and aristocratic stranger enters the lives of the unsuspecting, bringing with him a trail of death and moral decay. The protagonist, Aubrey, finds himself entangled with the enigmatic Lord Ruthven, whose presence exerts a corrupting influence on those around him. As Aubrey attempts to navigate the social circles of London and the landscapes of Greece, he must confront the logical impossibility of Ruthven's survival after fatal encounters. The narrative framework utilizes a blend of epistolary elements and third-person observation to document the slow realization of a supernatural threat within a rigid social hierarchy.

Readers and critics frequently highlight this collection as a foundational text for the development of the vampire archetype in literature. Discussion often centers on the stylistic contrast between Polidori's prose and the other included authors of the era. Many observers note the effectiveness of the atmospheric tension, which relies more on psychological dread than overt violence. The inclusion of supplementary materials is often praised for providing necessary context regarding the origins of the genre. Readers frequently find the pacing to be deliberate and reflective of the Victorian interest in the supernatural.