I read the book years ago and was thrilled when I finally heard it was being filmed. However, there's no reason this should have been adapted into anything other than a standalone movie or a one season limited series. Watching the show, it was obvious where the story was padded (the annoying next-door neighbors being the worst example) and the second half dragged as the story meandered into less interesting subplots, Dana behaved in ways that defied logic, and the main characters seemed weirdly content staying in the 1800s rather than focusing on getting home. Overall, I found the series entertaining, but the lack of a conclusion is exactly what happens when producers try to milk a property beyond what the story actually requires.