I was just watching Evil Dead 2 and a funny thing caught my eye. Namely, one of the pages of the book has a picture of a hero on it and it is said that in 1300 AD a hero banished the evil. We get to know that Ash is that hero - he fights the army of darkness after being sent back to 1300 AD, where he gets in possession of the book. But if the book is written BEFORE he gets ahold of it, when did the Dark One get time to ink that in? That is, unless, the Dark One actually sees into the future.
Probably just a plot-hole. Or is it?
He got his book from the past, since there were only pages in the cabin and the only time he got his hands on it was 1300 AD. Yet he has it after sleeping to the end of the 20th century. Either he left the book in the past and went WAY out of his way to find it again in present OR he took the book with him to the present. Furthermore, as seen in here,
https://imgur.com/AkooGBR the page of the hero is UNRIPPED in the Necronomicon of the TV series. This implies that there is another Necronomicon in the present timeline from which the pages in Evil Dead 2 were ripped.
Phew. Time travel can be messy. Anyway, for the timeline to be consisent, Ash or someone else has to travel back in time and put ripped pages (including making a new page of the hero) of it into a castle, where the professor from Evil Dead 2 finds them and recites the passages while recording it all on tape, pushing the events of Evil Dead 2 into motion.
Will it be Ash? Maybe. It could also be The Dark one, who just got her hands on the book in episode 9. She wrote it, she can write a couple extra pages with it if she wants, she can read it, and she recite a passage to travel back in time. The perfect set-up for season 2. But why would she bother to do this, you ask? Well, maybe Evil Dead 1 was what could´ve happened in the wrong circumstances (everyone, including Ash dies). While killing Ash the hero can prove quite a problem for deadites and even the Dark One herself, Ash the young man he was in Evil Dead 1 is defenseless against those deadites.
But the events of Evil Dead 1 cause an inconsistency within the timeline, Ash is alive presently. That´s because it doesn´t happen. As you can see in Evil Dead 2 with Ash observing the page of the hero, time does not adjust itself as it goes. Rather, everything is predetermined. However you change the past, the present has already changed accordingly before you go in to change the past. Ash stops Ruby from tampering too much in the past and makes it so that he survives as shown in Evil Dead 2. That is what we´ll see in the end of season 2. If the writers are any good, that is.