Character Relationship Map: Humanoids from the Deep

Characters

• Jim Hill (played by Doug McClure) — protagonist

  Witnesses a vessel explosion with his wife Carol. After monstrous attacks terrorize the village, including an assault on his brother, Jim investigates the incidents alongside scientist Dr. Susan Drake...

• Dr. Susan Drake (played by Ann Turkel) — supporting

  Canco scientist who investigates the mutations. She collaborates with Jim Hill to deduce that the humanoids result from salmon exposed to a growth hormone. Later, she coaches a traumatized, pregnant P...

• Jerry Potter (played by Meegan King) — supporting

  Teenager who goes swimming with Peggy. He is abruptly pulled underwater and found mutilated on the beach, marking one of the first brutal attacks by the humanoids.

• Peggy Larson (played by Lynn Theel) — supporting

  Teenager who witnesses her friend Jerry's brutal death at the beach. She is subsequently dragged by a monster and raped. She survives, is coached by Dr. Drake at the lab, and eventually gives birth to...

Canonical Relationships

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

• Dr. Susan Drake → Peggy Larson (Professional Coach And Patient) — Dr. Drake supports Peggy during her pregnancy and traumatic recovery.

  After the festival, Dr. Drake is at the laboratory coaching the traumatized and pregnant Peggy Larson.

Story Dynamics

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

• Dr. Susan Drake → Jerry Potter (Unknown Scientific Case) — Jerry's death is part of the phenomenon Dr. Drake studies.

  Dr. Drake investigates the mutations responsible for the attacks, including the humanoid violence that kills Jerry at the beach.

• Jim Hill → Peggy Larson (Narrative Investigator And Survivor) — Peggy's survival connects the investigation to the threat's reproductive consequence.

  Peggy is the only surviving witness among the early attacks, while Jim investigates the attacks and later asks about the laboratory where Peggy is bei...

• Jim Hill → Jerry Potter (Narrative Investigator And Victim) — Jerry's death contributes to the investigation that drives Jim's storyline.

  Jerry's mutilated death is one of the attacks that terrorize the village, leading Jim to investigate the growing threat.

• Peggy Larson → Jerry Potter (Social Friend) — Their friendship places them together during the first beach attack.

  The plot describes Peggy as accompanying her friend Jerry Potter to the beach before he is pulled underwater and killed.

• Jim Hill → Dr. Susan Drake (Alliance Investigation Partner) — They cooperate to uncover the biological cause of the attacks.

  Jim investigates the attacks alongside Dr. Susan Drake, and together they deduce that the humanoids resulted from mutated fish exposed to Canco's grow...

Story Analysis

A coastal community confronts mutated aquatic creatures created by a growth hormone experiment, while apparent victory gives way to a final biological horror.

Plot Progression

1. The Sea Gives Warning — A fishing vessel is destroyed after an unseen creature attacks near Noyo. Jim later discovers a mutilated dog, establishing that a violent threat has reached the village.
2. Blood on the Beach — Jerry is killed while swimming, and Peggy becomes the only surviving witness of the early beach attacks. Further assaults spread fear while Jim's family is drawn into the danger.
3. The Mutation Revealed — Jim and Dr. Susan Drake investigate the attacks and connect them to Canco's growth hormone experiments. Their explanation traces the creatures back to escaped salmon and mutated fish.
4. Festival of Terror — The annual festival becomes a mass attack as humanoids overwhelm the village. Jim responds by developing a gasoline fire barrier to prevent their retreat.
5. Peace Before the Birth — The bay fire appears to restore peace, but the threat survives through Peggy's pregnancy. At the laboratory, her monstrous offspring is born in a final shock.