The Floating Admiral

''The Floating Admiral'' is a unique, collaborative 1931 detective novel written by fourteen members of the British Detection Club. This landmark Golden Age whodunit was structured as a literary game of consequences, with each author taking turns to write a sequential chapter while building upon the plot twists left by their predecessors.


To simulate a realistic police investigation where detectives don't know the outcome in advance, the writers agreed to a strict set of rules:
Each author had to deal with the plot points introduced before them without taking any easy shortcuts, not ignoring clues.
Every contributor had to have a viable solution in mind when they wrote their chapter, ensuring they weren't just throwing in unresolvable complications.
The authors submitted their personal solutions in sealed envelopes, which are printed as an appendix at the end of the book.

The mystery takes place in the sleepy coastal town of Whynmouth, where an old sailor discovers a drifted rowing boat belonging to the local vicar. Inside is the body of Admiral Penistone, who has been stabbed through the heart.

Inspector Rudge is called in to investigate, immediately facing a wall of obstacles: there are no blood stains in the boat, the vicar is clearly withholding secrets, the victim's niece has vanished, and even the true identity of the corpse comes into question.

The book features a legendary lineup of Golden Age crime authors who tackled the narrative in the following sequence:
Prologue: G.K. Chesterton (written after the main text was finished)
Chapter 1: Canon Victor L. Whitechurch
Chapter 2: G.D.H. and Margaret Cole
Chapter 3: Henry Wade
Chapter 4: Agatha Christie (titled "Mainly Conversation")
Chapter 5: John Rhode
Chapter 6: Milward Kennedy
Chapter 7: Dorothy L. Sayers
Chapter 8: Ronald Knox
Chapter 9: Freeman Wills Crofts
Chapter 10: Edgar Jepson
Chapter 11: Clemence Dane
Chapter 12 & Epilogue: Anthony Berkeley (who was tasked with tying all the loose ends into a definitive conclusion).

The book is highly celebrated as a fascinating piece of literary history and is a must-read for classic mystery completists.