I have been binge-watching too many crime shows (Midsomer Murders, Broadchurch, etc.) and would like to get into reading more mystery novels instead. I have always loved Sherlock Holmes (already read all the short stories and novels...Hound of the Baskervilles is the greatest of all time). I also enjoyed gothic mystery elements in classics like Jane Eyre and Rebecca.
I have tried to start some Agatha Christie novels, but there are just too many characters! (I have also seen many Christie TV episodes/films as well, same problem of too many characters, but the notable exceptions were Death on the Nile, And then there were none, Murder on Orient Express, Witness for the Prosecution...all of which I loved watching but I don't feel motivated to read the books because I already know the stories.)
So besides Sherlock Holmes and Agatha Christie, what other classic mystery novels should I try? Something that I will find hard to let go of, as addicting to my adult self as Famous Five books were to me as a child? (I also read Nancy Drew and Hardy Boys as a teen...those were kind of hit and miss.)
I am also interested in trying out Anthony Horowitz's contemporary original works like the Hawthorne series and Magpie Murders -- are those good? Any other good contemporary mystery novels that are really gripping like Sherlock Holmes and don't overwhelm you with too many characters? Not sensational, formulaic, pulp fiction, but well-written, complex and intellectually stimulating works. Thank you!