OligarchyHugely enjoyable Observer Wickedly funny The Times When Tash, daughter of a Russian oligarch, is sent to an English boarding school, she is new to the strange rituals of the girls there. Theirs is a world of strict pecking orders, eating disorders and Instagram angst. While she spends her time at the lake and the stables, a few hand picked girls are invited to join the Headmaster at his house for extra lessons. Then her friend Bianca mysteriously