Sherlock Holmes, Gears of the Goddess

A WAR BETWEEN DUPLICATE WORLDS COULD HAPPEN!

A man with a steam punk weapon unknown to Victorian London steals an unusual artifact from the Royal London Museum.
A second man pedals a steam punk bicycle with rockets attached to exceptionally large front wheel.
A pair of soldiers from a pocket steampunk universe enters Holmes's world in pursuit of the two men who stirred attention in London with their unusual antics.
Holmes and Watson are in pursuit of the same two men, which will soon bring two parallel worlds into a clash that could be the beginning of a war.
Can Holmes and Watson solve the crime and prevent the war?