The Doctor was in an upbeat mood as he approached the exhibition. He was humming a tune from the opera they had seen, smiling at the few people he saw. The further he got from the main hotel/casino complex, the fewer people he did see. Most, he guessed, would be staying close to 'home' and safety. To them these were unsettling, worrying times.To the Doctor, of course, it was pretty much business as usual.