As in a classic English detective story, there were ten of them: men and women who didn’t know each other, all arriving at a ski resort holiday base. They were very different—an urban producer, the personal assistant of an oligarch, a well-known doctor, an aging beauty, a provincial businessman, a woman investigator, an unflappable Viking foreigner. What they had in common was one thing: hatred for the owner of the base, Oleg Devyatov. For some, this feeling was fresh; for others, it was old, strong, heavy—as stale snow…