Often regarded as her most interesting book and set on New Zealand's North Island,
 Ngaio Marsh herself considered this to be her best-written novel. It was a horrible
 death -- Maurice Questing was lured into a pool of boiling mud and left there
 to die. Chief Inspector Roderick Alleyn, far from home on a wartime quest for
 German agents, knew that any number of people could have killed him: the 
English exiles he'd hated, the New Zealanders he'd despised or the Maoris
 he'd insulted. Even the spies he'd thwarted -- if he wasn't a spy himself
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