A Sherlock Holmes spinoff where a film producer/ director feels he is being targeted

[Sneha Pathak (reader_girl_reader)]

This is a Holmes spinoff. The blurb said something about Holmes being roped in by a movie producer or director who finds his face has been defaced from all the pictures (or perhaps presentation slides?). The cover was white with blue design.

[Brenna]

The New Adventures of Sherlock Holmes - The Defaced Men by Tim Major?

[Kris]

Brenna's suggestion of The New Adventures of Sherlock Holmes - The Defaced Men by Tim Major sounds like your book.

Book description on Goodreads:
"... Eadweard Muybridge, pioneer of motion picture projection, believes his life is in danger. Twice he has been almost run down in the street by the same mysterious carriage, and moreover, disturbing alterations have been made to his lecture slides. These are closely guarded, yet just before each lecture an unknown hand has defaced images depicting Muybridge himself, which he has discovered, to his horror, only as he projects them to his audience. ..."

Google Books preview:
https://books.google.com/books?id=v3Z...