# Inspector Japp — The Big Four character guide

> Inspector Japp in The Big Four by Agatha Christie.

**Role:** supporting

**Also known as:** the worthy Japp, Japp

**First appearance:** 0000-i-the-unexpected-guest

## Who they are

A Scotland Yard man of blunt good sense, caught between professional loyalty to Poirot and the Yard's open scepticism about a criminal organization nobody can quite prove exists.

## Relationships

### [Hercule Poirot](https://www.betterreads.dev/discover/the_big_four_se/characters/hercule_poirot)

_professional_

Poirot and Japp have a professional working relationship as detective and police inspector, often collaborating on cases with mutual respect.

### [Hercule Poirot](https://www.betterreads.dev/discover/the_big_four_se/characters/hercule_poirot)

_professional_

Poirot and Japp have a professional working relationship as detective and police inspector, often collaborating on cases with mutual respect.

### [Hercule Poirot](https://www.betterreads.dev/discover/the_big_four_se/characters/hercule_poirot)

_professional_

Poirot and Japp have a professional working relationship as detective and police inspector, often collaborating on cases with mutual respect.

## In the story

### [II: The Man from the Asylum](https://www.betterreads.dev/discover/the_big_four_se/chapters/ii-the-man-from-the-asylum)

Called by Poirot to identify the dead man; recognizes him as Mayerling, a former Secret Service agent.

### [IV: The Importance of a Leg of Mutton](https://www.betterreads.dev/discover/the_big_four_se/chapters/iv-the-importance-of-a-leg-of-mutton)

Referred to as 'the Inspector' who accompanies Poirot and facilitates the interview with Grant.

### [V: Disappearance of a Scientist](https://www.betterreads.dev/discover/the_big_four_se/chapters/v-disappearance-of-a-scientist)

Brings Captain Kent to Poirot and provides information about Halliday's disappearance.

### [In the House of the Enemy](https://www.betterreads.dev/discover/the_big_four_se/chapters/viii-in-the-house-of-the-enemy)

Japp assists Poirot in setting up the trap but later reveals the footman's hoax, though Poirot remains convinced of Ryland's guilt.

### [IX: The Yellow Jasmine Mystery](https://www.betterreads.dev/discover/the_big_four_se/chapters/ix-the-yellow-jasmine-mystery)

Japp is in charge of the Yellow Jasmine Mystery and has invited Poirot to assist. He meets them at the station.

### [X: We Investigate at Croftlands](https://www.betterreads.dev/discover/the_big_four_se/chapters/x-we-investigate-at-croftlands)

Leads the initial investigation, suspects Ah Ling, and welcomes Poirot's assistance.

### [XI: A Chess Problem](https://www.betterreads.dev/discover/the_big_four_se/chapters/xi-a-chess-problem)

Joins Poirot and Hastings at dinner; shares details of Wilson's death and suspects poison meant for Savaronoff.

### [The Mouse Walks In](https://www.betterreads.dev/discover/the_big_four_se/chapters/xiii-the-mouse-walks-in)

His men assist Poirot by watching the house and following to Limehouse.

### [XIV: The Peroxide Blonde](https://www.betterreads.dev/discover/the_big_four_se/chapters/xiv-the-peroxide-blonde)

Assists in searching the Chinatown premises and discovers the secret entrance to the subterranean chamber.

## Links

- HTML: https://www.betterreads.dev/discover/the_big_four_se/characters/inspector_japp
- Book: https://www.betterreads.dev/discover/the_big_four_se
- All characters: https://www.betterreads.dev/discover/the_big_four_se/characters