|   First edition cover of Knock-Out | |
| Author | H. C. McNeile (as Sapper) | 
|---|---|
| Language | English | 
| Series | Bulldog Drummond | 
| Genre | Crime fiction | 
| Publisher | Hodder & Stoughton | 
| Publication date | 1933 | 
| Publication place | United Kingdom | 
| Media type | Print (Hardcover) | 
| Pages | 317pp | 
| OCLC | 54391529 | 
| Preceded by | The Return of Bulldog Drummond | 
| Followed by | Bulldog Drummond at Bay | 
Knock-Out was the eighth Bulldog Drummond novel. It was published in 1932 and written by H. C. McNeile under the pen name Sapper. [1] [2] It was adapted into the film Bulldog Drummond Strikes Back .