Panic in Ostend: James Ensor's most beautiful, most expensive, most extraordinary mask was stolen from his studio yesterday. We know the theft took place between 9pm and 11pm, but other than that we're in the dark... Who stole the mask? What devious method did the thief use? Where's the mask now? We are at our wit's end and need your help! Set off in Mariakerke and collect as many tips as possible to unravel the mystery. This mysterious treasure hunt is aimed at young people aged 10 and up.

The search is free and can be followed with a search form, which you can pick up for free at Toerisme Oostende or download at visitoostende.be, and a free app that shows you the right hints on location. The starting point of the Mystery of Mary is at the level of the Umbra artwork, on the Albert I Promenade.