Howard, with the assistance of Detective Inspector Josephine Sullivan of Milton Keynes, investigates the incident, which soon expands to the murder of humans as well as cows. They attempt to track who could possibly have had access to the gorgon-emulation software and installed it. Meanwhile, a ransom note is received demanding the software be uninstalled. Their investigation eventually leads them to the developers of the software, who are mostly dead from their own cameras, and an agent named "McLuhan" ("the medium is the message"). Howard discovers that the whole incident was inter-department wrangling gone wrong; a rival manager had been seeking to show that Angleton (Howard's manager) was incompetent and letting his own secret programs leak, and her minions had covered their tracks more bloodily than necessary. The "BSA audit" had been an excuse to install the gorgon-software into the Laundry's own internal cameras while Angleton was distracted. Howard and Sullivan infiltrate the Laundry to pull its Internet connection, while Angleton attends the meeting where he might be deposed. Howard comes upstairs to find Angleton victorious; it seems that his rival did not understand who Angleton "truly" reported to in the matrix management of the Laundry before launching her attempt to have him dismissed. His position as head of Counter-Possession Unit was actually secondary to his position as Private Secretary, and that position's manager went all the way to the top.