About the author/series: Barnaby Ross is a pseudonym of Ellery Queen. This is the third of four books in the Drury Lane series, the remaining three being The Tragedy of X, The Tragedy of Y, and Drury Lane's Last Case.
- Inspector Thumm, retired and now a private investigator
- Patience "Patty" Thumm, his daughter, and our narrator
- Governor Walter Bruno, former district attorney
- John Hume, current district attorney
- Aarow Dow, convict at Algonquin Prison
- Elihu Clay, owner of Clay Marble Quarry
- Dr. Ira Fawcett, his silent partner
- Honorable Joel Fawcett, Ira's brother, a state senator
- Jeremy Clay, Elihu's son
- -- Carmichael, Joel Fawcett's secretary
- Drury Lane, retired Shakespearean actor
Locale: Leeds, NY
Elihu Clay is suspicious of his silent partner, Dr. Ira Fawcett; believing he is behind possible corruption in getting state contracts for materials from his quarry. Clay hires private investigator Thumm to look into it. Thumm and his daughter, Patience (our narrator) travel to the Clay mansion in Leeds, NY. Soon after their arrival, Senator Joel Fawcett is found stabbed to death in his library. He had been receiving threats from prisoner Aaron Dow, who had been released earlier that same day.
It is refreshing to have a woman narrator appear - Patience Thumm. Her point of view adds a new element to the series.
In the Author's Note, it is poignant to read the teaser "In the intervening period [between Tragedy of Y and Tragedy of Z] Drury Lane solved many strange and perplexing cases, the more interesting of which will be recorded at some future time." It is sad that prediction did not come to pass, and we must be content with only four titles in the series.