I think the main theme could be redemption and the power of second chances. As the story unfolds, characters might face their past mistakes and strive for a better future.
Typically, they feature a detective inspector Chen as the main character. The stories usually revolve around solving crimes, often with a lot of twists and turns.
He is likely to be a very determined character. In the novels, he probably doesn't give up easily on a case, no matter how difficult it seems. He'll dig deep into the details, interview numerous witnesses, and follow every lead. His tenacity is what helps him solve the mysteries. Also, he might have some unique quirks or habits that make him stand out as a character, like a particular way of thinking or a special routine when he's working on a case.
One classic is 'The Adventures of Sherlock Holmes' by Arthur Conan Doyle. It features the brilliant detective Sherlock Holmes and his loyal friend Dr. Watson. Another is 'Poirot' series by Agatha Christie, where Hercule Poirot uses his 'little grey cells' to solve complex cases. Also, 'Inspector Rebus' novels by Ian Rankin are quite popular, presenting a gritty and complex view of detective work in modern Scotland.
Arthur Conan Doyle is a household name when it comes to detective inspector novels with his Sherlock Holmes stories. Agatha Christie is equally famous for her numerous detective novels featuring different sleuths. And then there's Raymond Chandler, who wrote about detective Philip Marlowe in his novels, adding a different flavor to the detective inspector genre.
They often feature complex mysteries. Detective Grace novels usually present readers with puzzling crimes or situations that require careful thought to solve.
One key characteristic is the complex and often morally ambiguous detective figure. For example, Sherlock Holmes in Arthur Conan Doyle's works. He has a brilliant mind but also some eccentricities. Another is the detailed setting of the Victorian era, with its strict social hierarchies and fog - filled streets adding to the atmosphere. Also, the mystery plots are usually convoluted, involving multiple suspects and hidden motives.