From the publisher blurb:
You will find in this book
- a short game system, simple and new
- a complete description of the hospital and its characters
- "reactive investigations" to adapt following the PCs actions
- game mastering advices
- a 13 episodes campaign
- and above all, a very deep atmosphere !
This is the only book needed to play, it has everything a GM needs to start setting up adventures in the world of patient 13. Other books for this games are not planned.
Official website: http://johndoe-rpg.org/p13/