Tamam Shud could not have been written without the devoted assistance and skill of Michael Warby, researcher extraordinaire; David Greagg, duty Wombat and mathematician; anthraxia and other internet geniuses; Jenny Pausacker; Vanessa Craigie; Nick Clenmann; Dr Ken Winkel; the learned forensic pathologist Dr Shelley Robertson; my poor friends, who had GBH of the ear after listening to me rabbit on about Somerton Man for months; and the sterling example of Gerald Feltus, who never let go of the coldest of cold cases.