Downloaded from the iTunes Store (MP4) and converted to MP3.  I have included both versions.  Take one or both.  They are both unabridged.

"A Beekeeper's Apprentice" by Laurie R. King (or "On the Segregation of the Queen")
Unabridged read by Jenny Sterlin

Note about the tracks:

There are 12 files which represent 6 “parts”.  
Part 01 – 1Bb has 20 seconds that are a repeat of the end of 1a (previous track)
Part 02 – 2Dd has 20 seconds that are a repeat of the end of 2c (previous track)
Part 03 – 3Ff has 20 seconds that are a repeat of the end of 3e (previous track
And so on.  It repeats so that you know you haven’t missed anything during the transfer to the next part.

Once again, this is unabridged.  Really is there any other way to listen to a book.  Abridged books are perfectly dreadful and simply a waste of time.

The Beekeeper's Apprentice is the first book in the Mary Russell series by Laurie R. King.  This is one of my favorite books.

In this novel, King presents the first meeting between fifteen-year-old Mary Russell, the young Jewish-American protagonist of King's series by that name, and Sherlock Holmes. Their meeting leads to a collaboration between the two, though this first novel focuses primarily on the detective training that Holmes gives to Russell. The series that this novel begins currently stands at eight novels.

Excerpt from the first part of the book:
I was fifteen when I first met Sherlock Holmes, fifteen years old with my nose in a book as I walked the Sussex Downs, and nearly stepped on him. In my defense I must say it was an engrossing book, and it was very rare to come across another person in that particular part of the world in that war year of 1915. In my seven weeks of peripatetic reading amongst the sheep (which tended to move out of my way) and the gorse bushes (to which I had painfully developed an instinctive awareness) I had never before stepped on a person.		

The Beekeeper's Apprentice (1994)
ISBN 978-0-312-42736-8