Sir John de Wolfe tackles his most disturbing and intriguing investigation to dateAaron of Salisbury a Jewish money-lender who was well known locally, has been found dead, his head enveloped in a brown leather money-bag, the pull strings pulled tight around his neck. The crabbed handwriting on a scrap of folded parchment clutched in the dead mans fingers is deciphered as a quotation from the Gospel according to St Mark "And Jesus went into the temple. . .and overthrew the tables of the money-changers"Setting out to track down a literate and Bible-learned killer, Sir John deduces that he is looking for a homicidal priest.