Could Sam or Ben come home? Sure, anything is possible storywise. I don't think Sam's coming home in this series though. I'm basing this off Deborah Pratt's wanting to turn QL into a franchise. She's mentioned wanting to use Sammy Jo in a movie and that, to me, seems like more of a fitting return for Sam. As for Ben, if the producers know firmly when the series is ending, they could very well bring Ben home in that finale with some word of Sam. I'd much rather see Scott on screen as Sam saying he's going to continue leaping as opposed to the notice we got at the end of Mirror Image. As for Mirror Image, there was stuff from Al the Bartender about Sam not being ready to know more. That hopefully is leaving writers salivating at the possibilities.