WARNING – SPOILER ALERT. DO NOT READ THE COMMENTS BEFORE HEARING THE STORY!!!
This is NOT an original SH story by Sir A.C. Doyle, but one written by Barrie Roberts, who has written an interesting and very intriguing story .
I tried to contact the publishers of the book in which this remarkable story is to be found – “The Mammoth Book of New Sherlock Holmes Adventures” by Carroll&Graf Publishers, Inc. 1997 – but they are no longer in existence. However, I was able to get permission from the successor – The Perseus Books Group. Thank you very much indeed!!
You can find them here:
And you can still find the book an Amazon (I just checked – it was edited by Mike Ashley).