# John Mason — The Casebook of Sherlock Holmes character guide

> John Mason in The Casebook of Sherlock Holmes by Arthur Conan Doyle.

**Role:** minor

**Also known as:** Mr. John Mason, Mr. Mason, Mason

**First appearance:** 0012-the-adventure-of-shoscombe-old-place

## Who they are

A trainer at Shoscombe Old Place involved in the mystery.

## In the story

### [The Adventure of the Three Garridebs](https://www.betterreads.dev/discover/the_casebook_of_sherlock_holmes_se/chapters/the-adventure-of-the-three-garridebs)

John Mason is the alias used by Killer Evans, who poses as John Garrideb.

### [The Adventure of Shoscombe Old Place](https://www.betterreads.dev/discover/the_casebook_of_sherlock_holmes_se/chapters/the-adventure-of-shoscombe-old-place)

Sir Robert's trainer who first suspects madness and reports the strange events to Holmes.

## Links

- HTML: https://www.betterreads.dev/discover/the_casebook_of_sherlock_holmes_se/characters/john_mason
- Book: https://www.betterreads.dev/discover/the_casebook_of_sherlock_holmes_se
- All characters: https://www.betterreads.dev/discover/the_casebook_of_sherlock_holmes_se/characters