Question: There's a scene in which, right after they've bought their house, Henry appears in their living room, naked and shot. I just don't see how this can happen because this would constitute a travel within a travel. That is, he travels to where he gets shot. Shot, he then travels to the newly-bought house; then finally travels back to the Christmas party from whence he came originally, where he finally dies. But the movie never establishes this sort of "Inception"-like travel. He always travels to one time, then comes back. Is this something that the book clarifies, or is it a mistake from the movie?