The prologue lays out the guiding rule for a major criminal operation: leave as few clues as possible. The narrator explains that total isolation is impossible because orders must be given, shipments arranged, and killings organized, so communication has to happen even if it creates risk.

François Loubet minimizes that risk by limiting direct contact. In emergencies, callers use a voice-changing phone, and routine communication happens through encrypted messages and emails routed through many locations so that investigators cannot trace their true origin.

The greater danger, however, is not only technical tracing but linguistic identification. The narrator explains that a person’s word choice and rhythm can reveal identity across different writings, which means even well-hidden emails could still expose Loubet.

To solve that problem, Loubet runs his messages through ChatGPT with a prompt asking for the style of a friendly English gentleman. By stripping away his personal verbal habits, the tool helps erase the signs that might connect the communications to François Loubet, leaving authorities able to suspect his crimes but unable to find him or prove who he is.