Book Sequels or Spin-offs We Never Expected
This list serves two purposes: to keep track of those hidden gems (or stories we wish had never been published) in our favourite series, and to let each other know about some secret or lesser known continuations of books that we thought stood alone. (You didn't have to like them...I loathed Cursed Child. ;) But it fits the category so I had to add it.)
Anyone can add books to this list.