Participants listen to instructions before a role play event at the Moszna Castle in Moszna, Poland October 10, 2019. Fans of the 'Witcher' book and video game series attend a 'school' where they dress up in costume and role play witchers fighting supernatural creatures. The book series by Polish author Andrzej Sapkowski was made into an award-winning video game series, and streaming giant Netflix is expected to release a TV adaptation later this year. Picture taken October 10, 2019. REUTERS/Kacper Pempel