It Couldn't Matter Less
First edition | |
| Author | Peter Cheyney |
|---|---|
| Language | English |
| Series | Slim Callaghan |
| Genre | Thriller |
| Publisher | William Collins, Sons |
Publication date | 1941 |
| Publication place | United Kingdom |
| Media type | |
| Preceded by | You Can't Keep the Change |
| Followed by | Sorry You've Been Troubled |
It Couldn't Matter Less is a 1941 thriller novel by the British writer Peter Cheyney. It is the fourth in a series of novels featuring the London-based private detective Slim Callaghan who enjoyed a series of dangerous adventures similar in style to the hardboiled American detectives created by Raymond Chandler and Dashiell Hammett. It was published in the United States as Set-Up for Murder.