Ellery Queen, pseudónimo de Daniel (David) Nathan (aliás Frederic Dannay) e de Manford (Emanuel) Lepofsky (aliás Manfred Bennington Lee).

Part One. 1 - In which are introduced a theatre audience and a corpse. 2 - In which one Queen works and another Queen watches. 3 - In which a "Parson" came to grief. 4 - In which many are called and two are chosen. 5 - In which Inspector Queen conducts some legal conversations. 6 - In which the district attorney turns biographer. 7 - The Queens take stock. Part two. 8 - In which the Queens meet Mr. Field´s very best friend. 9 - In which the mysterious Mr. Michaels appears. 10 - In wich Mr. Field's tophats begin to assume proportions. 11 - In which the past casts a shadow. 12 - In which the Queens invade society. 13 -Queen to Queen. Part three. 14 - In which the hat grows. 15 - In which an accusation is made. 16 - In which the Queens go to the theatre. 17 - In which more hats grow. 18 - Stalemate. Interlude. In which the reader's attencion is respectfully requested. Part four. 19 - In which Inspector Queen conducts more legal conversations. 20 - In which Mr. Michaels writes a lecture. 21 - In which Inspector Queen makes a capture. 22 - And explains.