In the novel Death in the Clouds, Madame Giselle kept a little black book containing coded information on her clients. Since Elise Grandier only got instructions to burn an envelope with papers if Madame Giselle died, she never burned the black book.
Clients mentioned in the black book[]
Dates and places mentioned in the black book[]
- Le Pinet, Monday. Casino 10.30.
- Savoy Hotel, 5 o'clock.
- A.B.C. Fleet Street, 11 o'clock.
Investigating the black book[]
Monsieur Fournier suspected that either Jean or Armand Dupont might be MR 24.