Phryne must put all misgivings aside to protect her father after a prize-winning scientist is found murdered on the same night the man focused on murdering Henry Fisher escapes police custody.
To raise money for female tennis players Phryne hosts a tennis tournament. When the practice partner of a rising star dies, the murder investigation exposes Phryne's hidden fear.
When a hotel concierge is pushed from the rooftop accompanied by an empty bag taken from Phryne's house, Jack calls her to investigate what looks like a robbery gone wrong.
Phryne's Aunt Prudence opens her home to a psychiatrist and natural healer to manage his sanatorium for 'hysterical' women and Phryne gets more than she bargained for.
Dr Mac calls Phryne to tell her that a boy has been found in a shallow grave near the hospital where she works the same morning she's approached by a young boy whose brother has gone missing.
Phryne, Jack, and their cohorts become caught in the cross fire between waring old world Italian restaurant families after the murder of one of the families matriarch. Meanwhile Dottie struggles with the Catholic mandate that married women must obey their husbands, causing friction between her and Hugh.
Miss Fisher and Dottie stumble on a murder while on a Military Base when visiting an old Air Force friend of Phryne's. Dottie and Hugh's relationship continues to be strained due to Hugh's fear that Dottie's work with Phryne will get her hurt.
When the unfortunate assistant in a magic show is beheaded on stage, Jack and Phryne's investigation unravels a secret murder in the past. Phryne's estranged father makes a surprise visit.