Character Relationship Map: Twisted Nerve

Characters

• Susan Harper (played by Hayley Mills) — protagonist

  A kind and sympathetic young woman working at a library who becomes the target of Martin's manipulative affection. Her discovery of his secrets leads to a traumatic captivity before she is rescued.

• Martin (Georgie) Durnley (played by Hywel Bennett) — protagonist

  A highly intelligent young man who feigns a learning disability under the alias 'Georgie' to manipulate others and hide his true nature. He is a calculating serial killer who eliminates obstacles to h...

• Joan Harper (played by Billie Whitelaw) — supporting

  Susan's mother who rents out rooms in her house. She is emotionally neglected and makes a fatal mistake by attempting to seduce Martin, resulting in her murder.

• Henry Durnley (played by Frank Finlay) — supporting

  Martin's wealthy stepfather and a banker. He is controlling and dismissive of Martin's behavior, ultimately becoming his first victim.

• Gerry Henderson (played by Barry Foster) — supporting

  A paying guest at Susan's house. He stumbles upon Joan's corpse and plays a crucial role in alerting the authorities.

• Enid Durnley (played by Phyllis Calvert) — supporting

  Martin's mother who has moved on with her life and remarried, showing little attention or concern for her son's well-being.

Canonical Relationships

Family, romantic, and professional connections based on plot evidence.

• Susan Harper → Joan Harper (Family Mother) — A dysfunctional mother-daughter dynamic where the mother's neglect creates vulnerability.
• Henry Durnley → Enid Durnley (Family Spouse) — A remarried couple navigating domestic tensions and differing priorities regarding their son.
• Martin (Georgie) Durnley → Enid Durnley (Family Mother) — A strained maternal bond characterized by neglect and mutual frustration.
• Martin (Georgie) Durnley → Henry Durnley (Family Stepfather) — A hostile stepfather-son relationship marked by rebellion and ultimate lethal violence.
• Martin (Georgie) Durnley → Susan Harper (Romantic Obsessive Lover) — Martin harbors a deep, unrequited romantic obsession with Susan, driving his infiltration of her life.

Story Dynamics

Alliances, conflicts, and narrative interactions that evolve throughout the story.

• Martin (Georgie) Durnley → Gerry Henderson (Social Paying Guest) — A casual household acquaintance who inadvertently becomes a key witness and rescuer.

Story Analysis

A deceptive identity gradually collapses as obsession, violence, and fractured self-perception drive the protagonist toward confinement.

Plot Progression

1. A Mask Takes Shape — The protagonist encounters a young woman during a shop theft and invents the Georgie identity. His family tensions and private mirror rituals reveal increasing instability.
2. Desire Behind The Mirror — The protagonist pursues the young woman through the library and rejects pressure to travel abroad. His disturbed self-image culminates in the destruction of the mirror.
3. A False Refuge — The protagonist stages a departure for France and obtains shelter by presenting himself as Georgie. His fixation on the young woman intensifies while suspicion and danger grow.
4. The Identity Unravels — After a stepfather's murder, the protagonist's rejected advance and hidden books expose contradictions in his story. An investigation into split personalities brings the deception closer to discovery.
5. Reflections Of Violence — The protagonist kills the rooming-house mother and confines the young woman. A corpse discovery, an emergency call, and a rescue attempt lead to the shooting and final confinement.