Kaldor City is also the setting of the Past Doctor Adventure "Corpse Marker", where we get to see the city and its ruling board of "Topmasters". At the time of "Corpse Marker", the Board comprises twenty Topmasters from the founding families, and they are seen to be keen to keep anyone not from a founding family off the board. The novel also introduces the character of Carnell to Kaldor City, who is a psychostrategist on the run from a corrupt "Federation" and hiding out in the city whilst ingratiating himself with the board by helping them compose their strategies: Carnell is a character from one of Chris Boucher's "Blake's 7" episodes, "Weapon", broadcast in 1979, and this novel is the first time that the fan-theory that "Doctor Who" and "Blake's 7" take place in the same fictional universe has received any kind of semi-official recognition. This theory had its roots in a report that "Blake's 7" creator Terry Nation wanted to introduce his "Doctor Who" monsters, the Daleks, into "Blake's 7" but was prevented by the BBC.