Character Relationship Map: Source Code

Characters

• Colter Stevens (played by Jake Gyllenhaal) — protagonist

  A U.S. Army pilot and the film’s central protagonist, Colter is repeatedly sent into the final eight minutes before a train explosion through the Source Code. He investigates the bombing, identifies D...

• Christina Warren (played by Michelle Monaghan) — protagonist

  Christina is a passenger on the doomed commuter train and a friend of the man whose identity Colter appears to inhabit during the Source Code missions. She experiences the repeated train disaster alon...

• Colleen Goodwin (played by Vera Farmiga) — supporting

  An Air Force captain overseeing Colter’s missions, Colleen communicates with him through the capsule’s video screen and briefs him on the train bombing. She initially enforces Dr. Rutledge’s orders bu...

• Dr. Rutledge (played by Jeffrey Wright) — supporting

  Dr. Rutledge heads the Source Code project and explains to Colter that the machine reconstructs the passengers’ final eight minutes through their residual collective memories. He treats Colter as the...

• Derek Frost (played by Michael Arden) — supporting

  Derek Frost is the nihilistic domestic terrorist responsible for the train bombing and the planned second attack in Chicago. Colter identifies him through a fallen wallet, traces his vehicle, and disc...

• Colter's Father (voice) (played by Scott Bakula) — cameo

Canonical Relationships

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

• Colter's Father (voice) → Colter Stevens (father)
• Colleen Goodwin → Dr. Rutledge (Professional Project Colleagues) — They work within the same military research operation.

  Goodwin operates the mission while Rutledge heads the project and explains the Source Code's experimental purpose.

• Colter Stevens → Dr. Rutledge (Professional Project Subject) — Stevens is the human subject of Rutledge's experiment.

  Rutledge explains the Source Code to Stevens and confirms that Stevens's body is connected to neural sensors and life support.

• Colter Stevens → Colleen Goodwin (Professional Mission Controller) — Goodwin directs Stevens's operational mission.

  Goodwin verifies Stevens's identity, briefs him on the train bombing, and sends him repeatedly into the Source Code.

• Colter Stevens → Christina Warren (Romantic Interest) — Their relationship evolves from confusion and distrust into mutual affection.

  Stevens develops feelings for Christina during repeated train runs and sets a date with her in the final alternate timeline.

Story Dynamics

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

• Dr. Rutledge → Derek Frost (Conflict Mission Adversary) — Frost is the external threat targeted by Rutledge's project.

  Rutledge's project is focused on finding the bomber responsible for the train attack and preventing the suspected second attack.

• Colleen Goodwin → Derek Frost (Conflict Operational Opponent) — Goodwin coordinates the operation that stops Frost's planned attack.

  Goodwin receives Stevens's identification of Frost, and that information helps the police arrest Frost and prevent the second attack.

• Christina Warren → Derek Frost (Conflict Victim And Threat) — Frost's terrorism directly endangers Christina.

  Frost shoots Christina during one investigation, and his bomb threatens everyone aboard the train.

• Colter Stevens → Derek Frost (Narrative Investigator And Target) — Frost is the target of Stevens's investigation.

  Stevens is repeatedly sent back to identify the train bomber and eventually identifies Frost through a fallen wallet, vehicle plates, and the van.

Story Analysis

A soldier trapped in an experimental time reconstruction seeks a bomber, confronts institutional control, and discovers a possible alternate future.

Plot Progression

1. The Train That Repeats — Stevens awakens on a train, witnesses its destruction, and is repeatedly returned to the same eight-minute period. His early attempts reveal the bomb but fail to identify the bomber.
2. The Cost of Survival — Goodwin and Rutledge explain that the disaster was real and that Stevens is physically trapped inside an experimental system. Stevens learns that his body is mostly gone and accepts a conditional prom...
3. Hunting the Bomber — Through repeated investigations, Stevens gathers clues, identifies Derek Frost, and locates the dirty bomb in Frost's van. Frost kills Stevens and Christina in one failed attempt, but the evidence ena...
4. Beyond Eight Minutes — Rutledge breaks his promise, but Goodwin grants Stevens one final run. Stevens stops the bombing, reconciles with his father through a call, sends Goodwin a message, and discovers that the Source Code...