So I've basically finished the entirety of Agatha Christie and Arthur Conan Doyle's canons and I'm looking for an old-school mystery writer/series to hit that same spot. After some light searches, Ruth Rendell, PD James and Dorothy L Sayers all came up as possible options. Which of those would you recommend, or if not them, any other suggestions? One thing to keep in mind - one thing I love about Christie and Doyle is that most of those books were written pre-WWII and I like the older, more historical settings. I know that Rendell and James at least have a lot of more contemporary novels and that some of their best stuff was written in the 60s and 70s, which is a little late for my taste. And I do prefer someone British if you have any other suggestions. Don't get me wrong - I love certain contemporary mystery writers like Alan Bradley and Gillian Flynn, but I'm looking for something that gives me the same feeling as Poirot, Marple, and Holmes!