Potrero Hill is presented as a darker, less public corner of San Francisco, a neighborhood whose distance from ordinary human attention makes it useful to the city’s hidden vampire society. Its most important dramatic function is practical rather than scenic: behind an old mill in Dog Patch, within the Potrero Hill neighborhood, Samson’s allies can meet after dark without attracting the notice of curious humans.

Setting and Reputation

Potrero Hill is associated with Dog Patch, specifically the area behind an old mill. The location is described as one of San Francisco’s shadier neighborhoods, a place where humans do not willingly linger after dark. That reputation gives the district a double character. For humans, darkness and isolation make it threatening; for vampires, the same qualities make it comparatively secure.

The neighborhood’s value therefore comes from concealment. It lies close enough to the city’s network of movement and business to remain accessible, yet far enough from public observation to accommodate beings who must protect their existence from human society. Potrero Hill becomes part of the broader geography through which vampires maintain a hidden communal life inside an ordinary modern city.

Vampire Refuge and Meeting Ground

Potrero Hill is explicitly favored by vampires because it is away from the curious eyes of humans. The old mill and its surrounding darkness create a setting in which vampire characters can gather without having to perform their human-facing identities as carefully as they would in a public venue. The area functions as a backstage space for the secret vampire society: obscure, potentially dangerous, and useful precisely because it is not socially inviting.

This role distinguishes Potrero Hill from more domestic or institutional spaces in the story. Samson’s home is connected with intimacy, protection, and the gradual exposure of his identity, while Potrero Hill is connected with covert movement and urgent coordination. The district’s darkness does not merely establish atmosphere; it supplies the practical conditions under which the hidden community can operate.

Urgent Communications and Plot Function

The location becomes directly involved when Ricky receives an urgent call from Carl. Carl is told that Ricky is with Amaury in Dog Patch, behind the old mill, and immediately drives to meet them. The message makes Potrero Hill a point of convergence for the vampire network, linking Ricky and Amaury’s concealed position with Carl’s rapid response.

Carl’s journey carries the location into the city’s larger geography. He accelerates down the hill toward the Embarcadero, turning Potrero Hill from an isolated refuge into the starting point of an urgent movement through San Francisco. The contrast is significant: the meeting begins in a secluded industrial margin, then sends the characters back toward a more visible urban corridor. Potrero Hill thus operates both as shelter and as launch point, a place where hidden information can be exchanged before action spills into the wider city.

Narrative Significance

Potrero Hill embodies the separation between ordinary human space and the concealed world inhabited by Samson, Amaury, Ricky, and their associates. Its darkness offers safety from observation, but that safety is inseparable from menace; a place avoided by humans can protect vampires precisely because it is already marked as dangerous and marginal. The district’s narrative importance lies in this inversion. What humans experience as an unsafe neighborhood becomes a refuge for creatures whose existence must remain unseen.

As a recurring point of reference in the book’s San Francisco setting, Potrero Hill helps make the vampire society spatially credible. The supernatural world is not isolated in a separate realm; it occupies neglected urban places, travels through familiar streets, and depends on ordinary geography to preserve extraordinary secrets. The old mill behind which the urgent meeting takes place therefore serves as more than a backdrop: it is a concrete threshold between public San Francisco and the hidden operations of the vampires living within it.