Sherlock Holmes Baffled is an American silent trick film created in 1900 with cinematography by Arthur Marvin.
It is the earliest known film to feature Arthur Conan Doyle's detective character Sherlock Holmes, albeit in a form unlike that of later screen incarnations.
Cheaper and simpler than the Kinetoscope, the system marketed by the American Mutoscope Company quickly dominated the coin-in-the-slot "peep-show" business.
[5] The Mutoscope worked on the same principle as a flip book, with individual image frames printed onto flexible cards attached to a circular core which revolved with the turn of a user-operated hand crank.
[6] The cards were lit by electric light bulbs inside the machine, a system devised by Arthur Marvin's brother, Henry, one of the founders of the Biograph company.
[9][10] Sherlock Holmes Baffled ran to 86.56 metres in length, giving the film a running time of 30 seconds (although in practice, due to the hand-cranked gearing of the Mutoscope this would have varied).
[15] The occasionally suggested date of 1905 is probably due to confusion with a Vitagraph film titled Adventures of Sherlock Holmes; or, Held for Ransom (1905).
[3] Because motion pictures were not covered by copyright laws until 1912, paper prints were submitted by studios wishing to register their works.
[24] Michael Pointer's report on the rediscovery of Sherlock Holmes Baffled in 1968 stated "it is an early trick film clearly made for viewing on a mutoscope or peepshow machine.