I must've missed something. Spoilers
Why did Charles become a vampire at the end and then leave in a rowboat?
shareThe vampires wanted a book to bring the end times for humanity. The book curses a living owner and his progeny with madness. Charles became undead and had the book sewn in his chest and left for sea. No more curse for the Boones and no end of times for the rest of humanity.
But they fucked up the whole mythos and showed only earthworms.