The Annexe is a London facility used for the Checquy’s foreign operations and a repository consulted when important records are unavailable online or at the Rookery. Its role places it within an organization that responds to supernatural threats through a far-reaching, but carefully concealed, network of information and administration.

Place in the Checquy

When Myfanwy Thomas reviews the organization’s facilities, she learns that its three principal sites are the Rookery, the Annexe, and Apex House. The Annexe is where foreign operations are based; Apex House, by contrast, is the organization’s ultimate headquarters, housing much of its legal and financial apparatus and hosting the Court’s weekly Friday meetings. The distinction makes the Annexe a specialized operational site within a wider institutional structure, rather than the Checquy’s central seat of governance.

Records and administrative work

The Annexe is also one of the London locations where Myfanwy can search for material that is not online or held at the Rookery. She sometimes goes there on weekends to look through its records, alongside those at Apex House. When information is held elsewhere, it can be shipped to her: battered folders arrive shrink-wrapped in plastic, marked with seals, and require Ingrid Woodhouse’s signature. Their listed origins—from Bath and Stirling to the Orkneys, Manchester, and Whitby—suggest how widely the Checquy’s records and operations are distributed.

This archival work belongs to a larger administrative system. The Checquy receives a torrent of government information, much of it irrelevant, and analyst teams sift reports, figures, and files for patterns that may expose a supernatural threat, such as a vampire manipulating the wheat market. The Annexe’s records are part of that information-rich world: a hidden institution has to preserve and connect details across locations if it is to recognize what those details mean.

Secrecy and institutional reach

The Checquy’s access to information extends through discreet briefings to senior national and local officials, who are given enough guidance to recognize unnatural events without being told the full nature of the threats. These contacts generate urgent reports from people across public life, while personnel placed in key organizations provide further updates. The Annexe’s foreign-operations role fits within this broad reach, though the text does not specify particular missions conducted from the facility.

That reach is deliberately difficult to trace. The Checquy’s name appears on no document outside the organization, few outsiders know it exists, and information reaches it through indirect channels and a designated phone number. Its computer network is disconnected from external systems. The Annexe therefore belongs to an institution whose work depends on broad intelligence access while keeping its identity and internal systems hidden.

A working institution, not just a setting

The novel presents Checquy activity as administrative labor as well as supernatural intervention. Myfanwy encounters accounting work on the cost of discreetly removing and examining plague-infected bodies, and she later reviews thousands of pages of complicated financial records while considering how access to them might matter to the Court. At an operational crisis, Mahesh Poppat reports that the first two teams are dead and describes the standard response: evacuate the street, coordinate discreetly with local police, and offer the public explanations involving a gas leak and asbestos. A later update on the analysis of chanting is routed to Myfanwy from the Rookery. These episodes do not establish that they occur at the Annexe; together, they show the reporting, records, procedures, and communication networks of which the Annexe is one part. Its significance lies in that institutional geography: foreign operations and stored knowledge are housed within a secret organization whose capacity depends on turning scattered information into action.