Character Relationship Map: Split Second

Characters

• Stone (played by Rutger Hauer) — protagonist

  Stone is a burnt-out, cynical veteran homicide detective whose former partner Foster was killed by a serial killer three years earlier. Obsessed when the murders resume, he investigates with Durkin, s...

• Michelle (played by Kim Cattrall) — supporting

  Michelle is Foster's wife and the former lover of Stone, whose return complicates Stone's investigation and emotional life. The killer kidnaps her and suspends her over the water as bait in the abando...

• Durkin (played by Alastair Duncan) — supporting

  Durkin is a rookie police officer and Oxford-educated psychologist assigned to partner with Stone. Ordered to monitor Stone's unstable behavior, he gradually bonds with him, recognizes the killer's pa...

• Foster (played by Steven Hartley) — supporting

  Foster was Stone's former police partner, whose death three years earlier deeply affected him. A serial killer killed Foster while Stone was unable to prevent it, leaving Stone wounded and psychologic...

Canonical Relationships

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

• Stone → Durkin (Professional Assigned Partners) — The forced partnership becomes the central investigative team.

  Rookie police officer Durkin is assigned to partner with Stone during the renewed murder investigation.

• Stone → Michelle (Romantic Former Lovers) — Their past affair complicates Stone's investigation and personal loyalties.

  The plot states that Stone had an affair with Michelle, who is Foster's wife.

• Michelle → Foster (Family Wife) — Michelle's marriage to Foster connects her directly to Stone's past trauma.

  The plot identifies Michelle as Foster's wife.

• Stone → Foster (Professional Homicide Partner) — Their former partnership defines Stone's guilt and obsession with the renewed murders.

  Foster was Stone's police partner, and Stone failed to prevent Foster's death during an earlier serial-killer case.

Story Dynamics

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

• Durkin → Michelle (Alliance Rescue Ally) — Durkin supports the rescue operation and the final escape.

  Durkin accompanies Stone during the final mission in which Michelle is found suspended over the water and later leaves the station with them.

Story Analysis

A traumatized detective and his assigned partner pursue a nonhuman killer through flooded London while confronting guilt, obsession, and an unresolved threat.

Plot Progression

1. Floodwater And Old Trauma — Flooded London introduces a renewed murder investigation. Durkin is assigned to Stone, whose guilt over Foster's death still governs his behavior.
2. Clues Beneath The Pattern — The detectives connect the killings to lunar cycles, organ removal, and abnormal DNA. Michelle's return adds a painful personal complication for Stone.
3. The Hunter's Design — Durkin interprets Stone's psychic link and concludes that the killer is deliberately targeting him. Michelle is kidnapped, forcing the detectives into the flooded Underground.
4. Heart In The Dark — The creature's nonhuman identity and fixation on Stone are revealed. Stone and Durkin locate its lair, rescue Michelle, and destroy it, though the final bubbles imply further danger.