Character Relationship Map: Old 37

Characters

• Darryl (played by Bill Moseley) — protagonist

  One of the cannibalistic brothers who continues his father's paramedic murder spree. He and Jon Roy abduct and kill multiple victims, including pouring lye on Brooke and burning her alive. During the...

• Jon Roy (played by Kane Hodder) — protagonist

  Darryl's brother and accomplice in the family's paramedic killings. He drives Ambulance 37 and participates in murdering Jordan, Brad, Rachel, and Tim. At the junkyard, a childhood trauma flashback ca...

• Amy (played by Caitlin Harris) — supporting

  A teenage outcast and the film's protagonist. After her mother agrees to a breast augmentation, she becomes involved with Jason. She survives the brothers' attack at the junkyard, discovers her mother...

• Brooke (played by Olivia Alexander) — supporting

  A high school student involved in the stunt that killed Angel and a past hit-and-run. She reveals the group's secret crime to Amy at a party. Later, her car is driven off the road, and she is captured...

• Jimmy (played by Kenneth Simmons) — supporting
• Jason (played by Maxwell Zagorski) — supporting

  Amy's boyfriend and part of the friend group responsible for Angel's death and a prior hit-and-run. He fights Jon Roy at the junkyard but is overpowered. He survives to rescue Amy, but they are both h...

• Jordan (played by Jake Robinson) — minor
• Angel (played by Brandi Cyrus) — supporting

  Amy's former high school outcast friend. She dies after falling from a car during a stunt orchestrated by Brad's group. Her death prompts a police investigation that intensifies when another group mem...

• Samantha (played by Catherine Blades) — minor
• Brad (played by Devon Spence) — supporting

  Angel's new boyfriend. He drives during the reckless stunt that causes Angel's fatal fall. He and Rachel leave a party, park near the junkyard, and are subsequently attacked and killed by Darryl and J...

Canonical Relationships

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

• Samantha → Jordan (Romantic Boyfriend And Girlfriend) — Samantha and Jordan are an intimate couple whose crash brings Ambulance 37 into the present-day story.

  Samantha and her boyfriend Jordan are making out while driving on Ash Pine Road before their crash.

• Angel → Brad (Romantic Boyfriend And Girlfriend) — Brad is Angel's new boyfriend within the high-school group.

  Angel is identified as having a new boyfriend, Brad, before the fatal driving stunt.

• Amy → Jason (Romantic Boyfriend And Girlfriend) — Their relationship develops from online contact into a romantic partnership.

  Jason begins talking with Amy online, invites her to a party, and later the two are described as a couple.

• Darryl → Jon Roy (Family Brother) — Darryl and Jon Roy are brothers bound by a shared murderous legacy.

  The adult killers are explicitly identified as brothers, Darryl and Jon Roy, who continue their father's modus operandi together.

• Jimmy → Jon Roy (Family Father) — Jimmy is Jon Roy's father and criminal influence.

  The opening shows two boys living with their father, Jimmy. Jon Roy later participates in the same ambulance-based killings.

• Jimmy → Darryl (Family Father) — Jimmy is Darryl's father and the origin of his murderous pattern.

  In 1977, two boys live in a junkyard with their father, Jimmy. The adult Darryl later continues Jimmy's method of using an ambulance to murder motoris...

Story Dynamics

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

• Brooke → Angel (Conflict Adversary) — Brooke's deliberate interference contributes directly to Angel's death.

  Brooke intentionally distracts Jason while Angel attempts the driving stunt, causing Angel to fall into the road and die.

• Jon Roy → Jason (Conflict Captor And Opponent) — Jon Roy directly restrains and defeats Jason.

  Jon Roy abducts Jason with Amy, and Jason attempts to fight him at the junkyard but is overpowered.

• Jon Roy → Amy (Conflict Abductor) — Jon Roy helps place Amy in the brothers' killing ground.

  Jon Roy and Darryl lure Amy and Jason to Ambulance 37, abduct them, and take them to the junkyard.

• Darryl → Amy (Conflict Predator And Victim) — Darryl becomes Amy's primary physical threat during the climax.

  Darryl chases Amy around the junkyard and stabs her breast implant while trying to kill her.

• Darryl → Brooke (Conflict Captor And Killer) — Darryl directly tortures and kills Brooke.

  Darryl and Jon Roy take Brooke to the junkyard, tie her down, pour liquid lye on her, and set her on fire.

• Amy → Angel (Social Former Friends) — Their broken friendship remains central to Amy's emotional context.

  Amy is troubled by a rift with her longtime friend Angel, whose death later intensifies the investigation.

Story Analysis

A hidden family legacy of ambulance murders collides with a group of teenagers whose concealed crimes provoke a violent reckoning.

Plot Progression

1. The Ambulance Legacy — The 1977 prologue establishes Jimmy's murder method and the brothers' inherited connection to violence. In the present, Samantha and Jordan's crash brings Ambulance 37 back onto Ash Pine Road.
2. A Death Concealed — Angel dies during a reckless car stunt, while the surviving group lies about what happened. Jordan's disappearance increases pressure around the concealed crimes.
3. Secrets at the Party — Amy grows closer to Jason while struggling with her self-image and personal grief. Brooke reveals the group's earlier hit-and-run, connecting them to the brothers' eventual revenge.
4. The Junkyard Harvest — Darryl and Jon Roy kill people connected to the road crimes and hide them in the junkyard. Brooke is captured and burned, showing the escalating brutality of the brothers.
5. Bloodline Reckoning — Amy and Jason are abducted and exposed to the brothers' grotesque family history. Jon Roy kills Darryl, but the final ambulance attack leaves the outcome unresolved.