How did they know that Amelia...(spoilers)
Was part of, or in, the film? It goes from the kid telling them that he didn't see Amelia when the film was shot, to them mentioning a few different times that Amelia made a film or was in it (not sure which). When was this information uncovered? Her boyfriend was connected to Sid and Misty, but I don't remember them finding out that Amelia was part of the film. Even Holly knows that she did a film with Sid! How?
Edit: They also refer to it at "Amelia's flick" even though at that point, how could they have known she was part of or behind the movie?