This is the story of a criminologist using numbers to catch criminals. His name was Alphonse Bertillon. His dream was to capture Ravachol – a ruthless bandit, who had no qualms about killing women and children. Nobody knew what he looked like, and could be anyone. The Parisians had nicknamed the “Black Knight”.

Will you help Bertillon in capturing the dangerous criminal? You will just need these seven cards:

Enjoy the investigation!