Sam Wendell, an old forger, dies of a heart attack while being pursued by a mysterious priest, leaving behind one of his small forgeries. Sam had told his wife it was the key to a fortune, and the priest soon tries to break into the Wendell house. Lovejoy aims to unravel the puzzle, by way of helping Sam's widow (who's left with very little) to recover anything of value. Along the way, Lovejoy dresses up as a priest.

Lovejoy values the house contents of an elderly widow, an old friend of Jane's, who is burgled soon afterwards. Finding he is the local police's prime suspect, Lovejoy decides to work out for himself (with the help of Brian Nunn, a remarkable bin man) who was behind the burglary. Matters are complicated by Eric's 'bin diving' habit.