delgadosaur wrote:

Watched it the other night, and I will say that I wondered exactly when the aliens 'sampled' Putnam to set up the scene at the end of the film. Outside the tunnel, when one of them, presumably the leader, revels itself? It seemed to me like in the story one had to be kidnapped to be duplicated.
I agree that from what we see in the movie, the aliens have to sort of engulf someone to duplicate them, but perhaps the engulfing business was merely the aliens capturing human beings; there doesn't, as you point out, seem to be a scene in which they engulf Putnam. Maybe they sampled his DNA when they sneaked into his house.