About
The mystery of a secret room, scene of many murders, is unraveled by Carlos Paredes, the Panamanian Sherlock Holmes. (Summary by manybooks.net)
Source and licence
This work is public domain or openly licensed. The licence terms are published by the source.
How do I open it?
Use the Shopy 101 app to download it or read it in place. Anything you add to your library stays the same on every device.