Im sticking to the theory that it is Bae (who is also Henry’s Father) and that August is the one who sent the postcard. I think that August is staying hidden because he is a wooden man. But I think August was calling someone else last season, not Henry. I think that August and Bae somehow met up in our world. Maybe discovered that they both came from FTL and then August sent Bae to find Emma to check on her …and then knocked her up. Baelfire-> fireman.
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