# Is "Killer Dolphin (UK: Death at the Dolphin)" by Ngaio Marsh a First Edition?

> **Quick answer.** A first edition of Killer Dolphin (UK: Death at the Dolphin) by Ngaio Marsh (Little Brown, 1966) is identified by: US Little, Brown, Boston 1966, published as Killer Dolphin. True first is the US Little, Brown edition (1966) as Killer Dolphin, preceding the UK Collins edition (1967) titled Death at the Dolphin.

**Checklist — a true first has these:**
- US Little, Brown, Boston 1966, published as Killer Dolphin
- The UK Collins edition followed in 1967 under the title Death at the Dolphin
- The US edition preceded
- The 24th Roderick Alleyn novel
- Publisher imprint reads Little Brown
- Not a book-club edition (see below)

| | |
|---|---|
| Author | Ngaio Marsh |
| Publisher | Little Brown |
| Year | 1966 |
| True first | US edition |
| Format | Hardcover (trade) |
| Key point | US Little, Brown, Boston 1966, published as Killer Dolphin |
| Book-club edition exists? | — |

## Points of issue
US Little, Brown, Boston 1966, published as Killer Dolphin. The UK Collins edition followed in 1967 under the title Death at the Dolphin. The US edition preceded. The 24th Roderick Alleyn novel.

## Is this the true first?
True first is the US Little, Brown edition (1966) as Killer Dolphin, preceding the UK Collins edition (1967) titled Death at the Dolphin.

## Telling it from reprints & book-club editions
Later printings and reprints follow the respective first editions.

## Source
New Mexico Literacy Project — Is *Killer Dolphin (UK: Death at the Dolphin)* by Ngaio Marsh a first edition? https://newmexicoliteracyproject.org/first-edition/killer-dolphin-uk-death-at-the-dolphin
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.