| Grave Mistake | |
|---|---|
1st edition |
|
| Author(s) | Ngaio Marsh |
| Language | English |
| Series | Roderick Alleyn |
| Genre(s) | Detective fiction |
| Publisher | Collins |
| Publication date | 1978 |
| Media type | Print () |
| Preceded by | Last Ditch |
| Followed by | Photo Finish |
Grave Mistake is a detective novel by Ngaio Marsh; it is the thirtieth novel to feature Roderick Alleyn, and was first published in 1978. The plot concerns the murder of an elderly widow in a nursing home, and involves a rare, and famous, postage stamp.