Suggest me an engaging book like The Godfather

I haven't read anything I've really liked in a long while. The last book I loved (and my favorite book) was the godfather. I liked how all of the characters grow and how complex the plot was. I also enjoyed how it was long but felt very fast paced because of the action. It wasn't too difficult and felt good to read, like I accomplished something. I need a book sorta like that before I go into another reading slump. I don't particularly love mafia things, it was more the story and the characters that l liked. Another book I liked a good bit but never finished was Dune if that's any help. Sci-fi isn't really my thing tho and it was more slow paced than I would like.