A Question of Blood: An Inspector Rebus Novel (Inspector Rebus Mysteries)

Every contact leaves a trace. That was how they put it. Otherwise known in the trade as ‘Locard’s Principle of Exchange’. Jack Collingworth had taught him this, the DI who had taken Hobbes under his wing back in the sixties. Exchange, lad! Monsieur Locard got that spot on. Tit for tat. You just need to work it out. The perpetrator always leaves som

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