When Phryne Fisher is invited to Bendigo to witness the investiture of her old friend Lionel, who is being made a Bishop, her expectations of the solemn and dignified ceremony do not include a murder.

Phryne is soon working with perspicacious local Constable Watson and eagle-eyed Inspector Mick Kelly to identify the perpetrator. It becomes quickly apparent the murder victim had been an overzealous deacon with a nose for trouble. Nobody seems very inclined to mourn his passing.

Applying her quick wits and magnetic charm, Phryne and her expanding team of sleuths discover murky layers of church politics, social scandals and business scams and blackmail. Soon, various suspects begin to form a long list, all with excellent motives for killing the deacon. Could the murderer be his own wife? A visiting dignitary? The mysterious organist? The angelic Brookes? The unemployed teacher? And why is the Bishop's Court being burgled?

Meanwhile the clock is ticking ... Will Phryne be able to bring to light the proof she needs before the killer strikes again or disappears completely?