# XII: A Shadow on the Wall explained — The Red House Mystery

> Chapter companion for The Red House Mystery by A. A. Milne.

## What happens

Antony recreates the scene of the murder in the office, focusing on a shadow he saw on the wall when Cayley left to get water. He realizes Cayley closed the door quietly as an afterthought, suggesting he was hiding something. Meanwhile, Inspector Birch drags the pond on Cayley's suggestion, and Antony suspects Cayley may plant evidence there. Antony and Bill plan to watch Cayley if nothing is found.

## Themes in this chapter

### Appearance vs. Reality

Cayley's seemingly helpful actions (getting water, suggesting pond drag) mask his deceptive intentions.

### Deception and Identity

Cayley's quiet door-closing and potential planting of false clues highlight deliberate deception.

### The Amateur Detective

Antony's reenactment and deduction of the shadow demonstrate his amateur sleuthing skills.

## Character check-ins

### Antony Gillingham

Reenacts the murder scene, deduces Cayley's deceptive door-closing, and suspects Cayley of planting evidence.

### Bill Beverley

Assists Antony in the reenactment and agrees to watch Cayley with him.

### Matthew Cayley

Implied to have closed the door quietly to hide his actions; suggested the pond drag to the inspector.

### Inspector Birch

Investigates Mark's escape, drags the pond on Cayley's suggestion, and clears Antony's alibi.

### Mark Ablett

Suspected of catching the 4:20 train to London; described as well-to-do and volatile.

### Robert Ablett

Mentioned as having arrived by the 2:10 train; his body's stain remains in the office.

## Key lines

> I want to go through it again. You must be Cayley. Cayley said he would get some water.

Antony asks Bill to play Cayley's role as he reenacts the moment Cayley left to fetch water.

_Antony's methodical approach to reconstructing the crime._

> The shadow on the wall! I was looking at the shadow on the wall. Oh, ass, and ten times ass!

Antony realizes the clue was the shadow moving as the door closed, which he had seen but not understood.

_Key insight into Cayley's secretive behavior._

> That it was Cayley's idea to drag the pond.

Antony notes that Inspector Birch mentioned Cayley suggested searching the pond.

_Raises suspicion about Cayley's motives._

> What's the safest place in which to hide anything very important? Somewhere where everybody has already looked.

Antony explains that hiding evidence in a place already searched is safer than an unsearched spot.

_Antony's reasoning about Cayley's potential plan._

## Links

- HTML: https://www.betterreads.online/discover/the_red_house_mystery_se/chapters/xii-a-shadow-on-the-wall
- Book: https://www.betterreads.online/discover/the_red_house_mystery_se
- All chapters: https://www.betterreads.online/discover/the_red_house_mystery_se/chapters