Meitantei Holmes

Both share direction from Miyazaki and both have an adventure tone set against beautiful, highly detailed European style backgrounds.  

Episodic criminal cases are taking place in England, mostly among members of the upper castes. There are no murders though, just theft or fraud. The protagonist solves the cases with his/her helpers, who live in the same apartment. In short, you get some unbloody criminal hunting in these titles. 

Anthropomorphised reimaginations of classics of western literature. 

Besides being about a criminal that escapes from the law, they also share Miyazaki Hayao. 

the story's and charaters are like twins. its both oubout a man who is trying to find something (montana searches for treasure, and sherlock of bad guys) and the bad guys of the series are in both shows a mastermind with to stupid helpers. their looks are almost the same in both series. and the smart girl of the series who helps the main character appears in both shows. and i could go on like this for a long time :P