
If you're looking for anime similar to Halloween Tantei: Oz Williams, you might like these titles.
In the late 19th century, the British Empire nobility reigns while its working class suffers at their hands. Sympathetic to their plight, William James Moriarty wants to topple it all. Frustrated by the systemic inequity, Moriarty strategizes to fix the entire nation. Not even consulting detective Sherlock Holmes can stand in his way. It's time for crime to revolutionize the world!
The Main character is a 15 year old Isabelle Laustin, other characters being her parents Leon and Marie, Isabelle`s friends Jean and his sister Marie, and Isabelle`s suitor, Captain Victor. When Paris is beseiged and Napoleon III`s army is defeated, Isabelle escapes to London, disguised as a boy, and engages in secret agent stuff.
Maybelle West is a young relative of the famous Miss Marple, and an aspiring detective in her own right. Although the privilege of getting to witness Miss Marple's work from up close ought to be enough to train anyone in the craft, Maybelle also secures herself a place under the tutelage of another detective genius, Hercule Poirot. Thus, she ends up traveling between the village of St. Mary Mead and London, observing the two great minds at work as they use their amazing powers of deduction to solve crimes that leave the regular police baffled.
In the late nineteenth century, Sherlock Hound is a crafty canine with a penchant for sleuthing. Alongside his trusty sidekick Watson, Sherlock Hound will solve the hardest of cases with ease. Whether it’s tracking down the origin of green balloons, helping launch the start of an air mail service from London to Paris, or tracking down a missing gold statue, Sherlock Hound will always get to the bottom of things – that is, if the wily Moriarty and his henchmen don’t get in the way!
Wealthy miser Ebenezer Scrooge is a mean, stingy old man who never has a kind word for anyone. Lacking both empathy and human compassion, he spends his days greedily exploiting people to make himself richer. On Christmas Eve he is visited by the ghost of his former business partner, Jacob Marley, who warns him that three more spirits are coming to show him the error of his ways. If Scrooge refuses to change, his spirit will be condemned to wander the earth forever!
At the Queen's behest, young master Ciel Phantomhive hosts a lavish banquet to be attended by the crème-de-la-crème of London's elite. What begins as a fabulous affair quickly takes a dark turn when guests begin turning up dead! Murder takes center stage in this chilling OVA collection where even a debonair demon butler isn't safe from a killer on the prowl. Should Sebastian and Ciel wish to once more see the light of day, they must join forces with their guests, including the legendary author Sir Arthur Conan Doyle, to unravel the mystery – and apprehend the murderer before it's too late!