| Author | Sharadindu Bandyopadhyay |
|---|---|
| Original title | Durgo Rahasya (দুর্গরহস্য) |
| Language | Bengali |
| Series | Byomkesh Bakshi |
| Genre | Detective, Crime, Mystery |
| Publisher | P.C. Sorkar and Sons also anthologized by Ananda Publishers |
Publication date | 1952 in hardcover Byomkesher diary and in the Sharadindu Omnibus in 1972 |
| Publication place | India |
| Media type | Print (Hardback & Paperback) |
| Pages | 182 pp |
| Preceded by | Chitrochor |
| Followed by | Chiriyakhana |
Durgo Rahasya (Bengali: দুর্গরহস্য, romanized: Durgarahasya, lit. 'The Mystery of the Fortress') is an adventure detective novel written in 1952 by Sharadindu Bandyopadhyay.[1]