Panic in Ostend: yesterday the most beautiful, most expensive, most special mask of James Ensor was stolen from his studio. We know the theft took place between 9 PM and 11 PM, but otherwise we are in the dark ...
Who stole the mask? What devious method did the thief use? Where is the mask now? We are desperate and need your help!

Set out in Mariakerke and collect as many tips as possible to unravel the mystery.