Character Relationship Map: Detective Extralarge

Characters

• Jack Costello (played by Bud Spencer) — protagonist

  A retired police officer living in Miami who now works as a private detective, handling a wide range of cases for unusual clients. He is the central figure in the investigations and is supported by hi...

• Dumas (played by Michael Winslow) — supporting

  The son of an old friend of Jack Costello, he joins Costello and Sam Bosley in the second series as they face dangerous cases. Costello amusingly gives him the nickname “Dumas.” The summary identifies...

Canonical Relationships

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

• Dumas → Jack Costello (Cartoonist and subject) — Dumas initially approaches Jack because Jack's appearance is useful to his cartoon work.

  "Dumas says that he is a cartoonist and needs Jack Costello's image for a cartoon, using the different name Extralarge."

Story Dynamics

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

• Jack Costello → Dumas (Investigation partners) — Their alliance is shown through shared exposure to criminal conspiracies, kidnappings, murders, and political threats.

  "In Season 2, Jack and Dumas accidentally stop the kidnapping of a small girl. They are also appointed together to investigate murders connected to a...

Story Analysis

The two-season narrative follows Jack Costello through interconnected Miami investigations, moving from isolated crimes and personal danger toward wider conspiracies involving organized crime, political threats, and legal manipulation.

Plot Progression

1. Season 1: Strange Beginnings — Jack encounters Dumas and becomes involved in a dangerous refuge case. The opening investigations establish Miami as a setting where apparently ordinary crimes conceal larger threats.
2. Season 1: Hidden Motives — Jack investigates a suspicious football-player killing and a disturbing self-inflicted death. Missing-person and black-magic elements broaden the season's atmosphere of uncertainty.
3. Season 1: Violence Escalates — A fixed boxing match leads to disappearance and murder, while a child-killing investigation becomes an urgent rescue attempt. The season closes with a scientist being killed despite protection.
4. Season 2: Deceptions And Revenge — A scientist is replaced by a look-alike, and a claimant's identity becomes uncertain. Jack is then targeted by a former opponent whose revenge plot places him in prison.
5. Season 2: Kidnapping And Cartels — Jack and Dumas interrupt a kidnapping that conceals a conflict among drug traffickers. The case shifts from apparent extortion to a broader struggle involving criminal power and hidden leverage.
6. Season 2: Threats And Expansion — Jack and Dumas investigate ritualized murders while protecting a threatened politician. The season also presents an organized gambling expansion based on a proposed legal loophole.