There's currently eight books in the series. I've read the first three, "The Eyre Affair", "Lost in a Good Book" and "The Well of Lost Plots".
|Thursday Next 1-3|
Thursday Next is the main character of the series and she lives in a sort of parallel England to ours. She is a literary detective with a pet Dodo and a crazy family. She gets her big break investigating the kidnapping of Jane Eyre from the book of the same name. After inadvertently altering the ending of Jane Eyre (with some loving it, and purists hating it) she becomes an apprentice to Miss Havisham from "Great Expectations" and joins Jurisfiction (the police force inside books). She faces trials (both literal and figurative ones) and meets all sorts of literary characters along the way.
I think I've mentioned before that I have a soft spot for fantasy in my novels and these books definitely have it. The more familiar you are with the classics, the more the "inside" jokes will make sense. If you like mysteries with a touch of humor and smidge of famous literature characters, you should really give the Thursday Next series a try. They're light and funny, but still hold your attention and make great fall reading.