I really enjoy them too. And it looks like bookdepository.com now has all of them up on their site so you should be able to get them all. http://www.bookdepository.com/search?searchTerm=alcatraz versus the evil librarians&search=Find+book
Thanks. My version has his dad's letter saying "The trick is to not own your own soul when you sign the contract." So maybe it is different in other versions. It would make sense if it says when the contract comes due in your version.
I have a question from The Scrivener's Bones that I could not find an answer for so I posted it here. I don't know if it needs to be in a spoiler or not so I put it as such.