The Haegum is the both the name of Tancred's secret headquarters, as well as a general reference to all of Tancred's cadre. Physically the Haegum is located within the grounds of the Tarsus Coasters Incorporated, an umbrella organization for several minor Tarsus guilds involved in interstellar commerce, shipping, banking, insurance, and various other endeavors. Tancred has controlling interests in several of the enterprises that make up the TCI, which in turn provides much-needed revenues that can be used to support his operations. Most TCI employees and indentured workers are blissfully ignorant of the existence of the Haegum, only a select few know of its existence and none outside the Inquisition knows what it truly is.

Several hundred people have access to the Haegum, but it is rare to find more than a hundred gathered there at any one time. The Haegum's inhabitants can be grouped into permanent residents and transient residents; in the former category are the staff of forensic-scholars, security detachments, and other support staff. The the transient population is mainly made up of Inquisitorial representatives; Interrogators, Explicators and other trusted agents, as well as the occasional visitor from another part of the Inquisition.

The main Haegum complex covers seven sub-levels of the TCI hab-block, completely self-contained and cut of from the outside, except through a few secret high-security entrance. Within the Haegum is everything needed to plan, prepare and monitor the operations of Tancred's Inquisitorial cadre – storage areas, workshops, living and recreational areas, kitchens, training facilities, firing ranges, librariums, offices, ops rooms, medical facilities, detention areas, interrogation and torture facilities, and much more. Although parts of the Haegum are lavishly furnished, especially the guest suites and such, most of the levels are quite plain and utilitarian. The exception is the private quarters of the agents and their adjoining recreational areas; every effort has been made to make them as warm and pleasant as possible.

At the heart of the Haegum is the Sphere, a massive adamantine sphere buried deep inside the hab-block in which the Haegum is located. The only know access to the Sphere is though a heavy adamantine gate on sub-level 7. Only the most senior members of Tancred's cadre are allowed within; and of those only the Quartermaster makes his home within the walls of the Sphere. Many suspect that the Inquisitor himself is lairing inside the Sphere, but this has never been proved true by any know party. What is know is that the Sphere is psychically shielded and contains high-security vaults where special prisoners, evidence, and equipment is kept.

As can be gleaned from the above data Tancred is a rich and influential man by any standard, but his commercial competitive edge is somewhat blunted by the fact that most of the earnings are used to fuel Inquisition operations in Calixis sector. Maintaining not only the Haegum headquarters, but also a large network of agents and informants is costly business indeed. Tancred has no problems with maintaining the status quo, but his resources are not limitless, nor does the estate manage itself. For Tancred's acolytes this means that their master has more resources than most, but also many more expenses, and so they cannot expect to always gain access to extra resources!