Off With His HeadPagan revelry and morris dancing in the middle of a very cold winter set the scene for one of Ngaio Marshs most fascinating murder mysteries. When the pesky Anna Bnz arrives at Mardian to investigate the rare survival of folk dancing still practised there, she quickly antagonizes the villagers. But Mrs Bnz is not the only source of friction two of the other enthusiasts are also spoiling for a fight. When the sword dancers traditional mock beheading of