The mystery of the Venus Island fetish - Dido Butterworth

It's 1932, and the Venus Island fetish, a ceremonial mask surrounded by thirty-two human skulls, now resides in the museum in Sydney. Young anthropologist Archie Meek, recently returned from an extended field trip to Venus Island, has noticed a strange discolouration of some of the skulls of the fetish. Has someone been tampering with it? Is there a link between the mysterious disappearance of Cecil Polkinghorne, curator of archaeology, and the strange discolouration? And how did Eric Sopwith, retired mollusc expert, die in the museum's storeroom?