When a guillotine act at a magic show kills a magician's assistant, Miss Fisher is called in to solve the case. Meanwhile, her ne'er-do-well father arrives from England and interferes with the relationship between her and Jack Robinson.
The murder of an Italian grandmother in her restaurant kitchen sets more than spaghetti sauce simmering, as two rival immigrant families juggle the demands of cooking, love, and an Italian crime syndicate.
After a hotel concierge falls to his death with Phryne's stolen bag, the trail of clues leads to her eccentric father, Baron Henry Fisher, who may finally have gotten himself into trouble too deep to be fixed by charm.
The man intent on killing Phryne's father escapes from the hospital on the same night that a prominent scientist is murdered. As Phryne and Jack race the clock to save Baron Fisher, Hugh and Dot make final wedding preparations.