Helen Heyer is the ambitious wife of Conrad Heyer. She hinted at The Party's plot to take advantage of the chaos left in the wake of a nuclear war and apparently planned to install Conrad as the ruler of the country, while she secretly pulled his strings. She persuades Scottish gangster Alistair Harper to feed her information on movements by his boss, Peter Creedy, and the Finger, the political police arm of the Norsefire state. She promises him control of the Finger when Conrad comes to power.

Later on, Helen starts an affair with Harper, and their lovemaking is caught in a closed-circuit bedroom camera that she knows is installed in the bedrooms of every member of the Norsefire Party but she believes is inoperative. Conrad eventually watches the video in a monitoring room to his complete shock. He lures Harper into a room in his house where the same video is playing. While Harper is entertained, Conrad ambushes him and beats him to death with a wrench, but not before being mortally wounded by Harper's razor. Helen then discovers the two in the secret room, and seeing that her plans are ruined, berates him one last time before wiring up a camera to the TV set so Conrad can watch himself die.

Helen later tries to flee the city, but loses her car and ends up among a gathering of hobos who begin harassing her. Chief Inspector Eric Finch stumbles upon the group and Helen desperately tries to persuade him to help organize a militia to try to take back the city. Finch refuses and leaves her for the hobos.