# Is "The Seven Dials Mystery" by Agatha Christie a First Edition?

> **Quick answer.** A first edition of The Seven Dials Mystery by Agatha Christie (William Collins & Sons, 1929) is identified by: First published in the UK by William Collins & Sons, 24 January 1929; US Dodd, Mead followed later the same year. UK William Collins & Sons precedes the US Dodd, Mead edition; both dated 1929.

**Checklist — a true first has these:**
- First published in the UK by William Collins & Sons, 24 January 1929
- US Dodd, Mead followed later the same year
- Features Superintendent Battle
- Not a Collins Crime Club book: that imprint did not launch until May 1930
- Publisher imprint reads William Collins & Sons
- Not a book-club edition (see below)

| | |
|---|---|
| Author | Agatha Christie |
| Publisher | William Collins & Sons |
| Year | 1929 |
| True first | UK edition |
| Format | Hardcover (trade) |
| Key point | First published in the UK by William Collins & Sons, 24 January 1929 |
| Book-club edition exists? | — |

## Points of issue
First published in the UK by William Collins & Sons, 24 January 1929; US Dodd, Mead followed later the same year. Features Superintendent Battle. Not a Collins Crime Club book: that imprint did not launch until May 1930.

## Is this the true first?
UK William Collins & Sons precedes the US Dodd, Mead edition; both dated 1929.

## Telling it from reprints & book-club editions
Later reprints follow the first edition.

## Source
New Mexico Literacy Project — Is *The Seven Dials Mystery* by Agatha Christie a first edition? https://newmexicoliteracyproject.org/first-edition/the-seven-dials-mystery
CC BY 4.0. Part of the Canonical First-Edition Points of Issue dataset (https://newmexicoliteracyproject.org/api/first-edition-titles.json). Last reviewed 2026-07-03.