The Cheshire Conspiracy is a sequel to the Manchester Vendetta and deals with the aftermath of the overthrow of the fascist dictator Russell Hartmann and the liberation of the UK by NATO forces. After their deadly encounter with Max Boyston, Head of the Manchester Internal Security Service, Guy Manners and Julie Rowlands return from exile in the Irish Republic to a country still not at peace with itself. Questioned by Special Branch and pursued by assassins, Guy and Julie seek to discover their enemies' safe house and eliminate the threat it poses to their lives. Aided by a computer hacker, they uncover a conspiracy to release a key member of the former fascist regime from the high security prison in Slough, and become involved in a race against time to thwart his escape.