Learning Time

With the sudden reappearance of a ghost from her past, Ellie is certain she'll finally get the answers to which she's been looking for so long. How is time travel possible? Do her regenerative abilities have something to do with the time travel? Will they be able to take Thomas home now?

Finally getting answers about the time travel and regeneration, Ellie finds there are only more questions, questions to which she cannot get a straight answer. When she has to travel back to Tombstone, Ariz...