The Secret of the dead Monks

The Middle Ages hold many dark secrets in store. This also led to the mysterious deaths of four monks. They were found lifeless in their monastery, but every trace of a perpetrator had already been blurred. In order to quickly provide the people with some responsibility, innocent women were condemned as witches and burned, and the next best monks were cruelly tortured. Investigations against the real perpetrator continued to fail. 

But the strange black spots on the tongues and fingertips of the four dead just won't let you calm down. Secret investigations eventually lead you to the highest tower of the monastery - a part of the library that is not accessible to everyone. When the old librarian leaves the mysterious premises for an hour-long session, you take your chance ... 

Can you find the last traces of the search for the murderer here?

Players under 16 must be accompanied in the game by at least one adult. For players under 14, there must be at least as many accompanying adults as children.