Sherlock’s Camera

A box full of puzzles and riddles!

“Dear Detectives,
Over all these years I have been investigating the most mysterious cases. Now it is time for me to retire, so I decided to entrust my life’s work to one of you, to the most talented and capable detective.
I am leaving you this creation of my own — a camera with an encrypted mechanism.
Open the camera and discover the identity of my successor!
Sincerely yours,
S. H.”