Resurrection - S01E03 - Two Rivers - spoilers

Given the seemingly out of sync timing of the Dad injuring his arm second and feeling pain first, I'm going to guess that we're dealing with some sort of time travel thing here. Since Jacob wound up in China it's not only time but also space, which makes me think wormhole, probably localized at the river. The people who are coming back are the actual same people, but displaced in time and revisiting their own time-stream. "Two Rivers" is a reference to this. Makes me think of the Doctor Who episode "The Girl Who Waited," which played on this same concept, sort of (and which featured a facility called "Two Streams," now that I think of it).



Or, it's some sort of Many Worlds/Multiverse thing, and there's a weakening of the walls between universes in the area around the river.



Season finale: someone who DIDN'T die comes "back," so there are now two of them walking around town.