The Adventure of the Abbas Ruby

by Adrian Conan Doyle, John Dickson Carr

The Exploits of Sherlock Holmes is a short story
collection of Sherlock Holmes pastiches written by Adrian
Conan Doyle and John Dickson Carr , first published in
1954. As an early and rather authoritative example of
Sherlockian pastiche—the collaborators being the son
and the authorised biographer of Holmes's creator—there
is much to interest collectors.
Stories and writing
The stories contained in the collection are:
" The Adventure of the Seven Clocks "
" The Adventure of the Gold Hunter "
" The Adventure of the Wax Gamblers "
" The Adventure of the Highgate Miracle"
" The Adventure of the Black Baronet"
" The Adventure of the Sealed Room"
" The Adventure of Foulkes Rath"
" The Adventure of the Abbas Ruby "
" The Adventure of the Dark Angels "
" The Adventure of the Two Women "
" The Adventure of the Deptford Horror "
" The Adventure of the Red Widow"
The collaboration was not smooth, as Douglas G.Greene
relates in John Dickson Carr: The Man Who Explained
Miracles . There is some doubt about who wrote what—
though at times Carr's highly recognisable style breaks
through the convention of pastiching the original Conan
Doyle stories. [ citation needed ]
Parallels to canonical stories are uncomfortably close
sometimes. The stated intention of expanding the
tantalising references Doyle made to unwritten cases did
not work out, and the new stories often have to abridge
those references, or quote them selectively, or explain
them away.
In 1963 John Murray published two paperback volumes
which divided the stories into The Exploits of Sherlock
Holmes by Adrian Conan Doyle and More Exploits of
Sherlock Holmes by Adrian Conan Doyle and John
Dickson Carr. The first title contains the last six stories
listed above, the second the first six. Greene suggests
that authorship may be more complex.

Unknown Binding

First published January 1, 1954

About the author

Adrian Malcolm Conan Doyle was the youngest son of Sir Arthur Conan Doyle and his second wife Jean, Lady Doyle or Lady Conan Doyle. He had two siblings, sister Jean and brother Denis, as well as two half-siblings, sister Mary and brother Kingsley.
Adrian Conan Doyle has been depicted as a race-car driver, big-game hunter, explorer, and writer.
He married Danish-born Anna Andersen, and was his father's literary executor after his mother died in 1940. He founded the Sir Arthur Conan Doyle Foundation in Switzerland in 1965. On his death, his sister Jean Conan Doyle took over as their father's literary executor.

(source: Wikipedia)