| When in Rome | |
|---|---|
1st edition |
|
| Author(s) | Ngaio Marsh |
| Language | English |
| Series | Roderick Alleyn |
| Genre(s) | Detective fiction |
| Publisher | Collins |
| Publication date | 1970 |
| Media type | Print () |
| ISBN | 000231889X |
| Preceded by | Clutch of Constables |
| Followed by | Tied Up in Tinsel |
When in Rome is a detective novel by Ngaio Marsh; it is the twenty-sixth novel to feature Roderick Alleyn, and was first published in 1970. The novel takes place in Rome, and concerns a number of murders among a group of tourists visiting the city; much of the action takes place in the "Basilica di San Tommaso", which bears some resemblance to the Basilica of San Clemente.
The novel was adapted into a 60 minutes radio play by the BBC starring Jeremy Clyde.