Wasn't there a scene where... ?
I just saw this movie again for the first time in over 15 years and I remembered it kind of differently. I always thought there was a scene where the father returns and it was revealed that Medlock had purposely kept the boy inside, knowing that he was actually well all along. Something about doing it to keep her job - in other words, if the boy was well and he and his father were off travelling etc. she might not be needed? I remember a confrontation between the father and Mrs. Medlock at the very end. Am I thinking of a different movie?
I also remember a scene with a doctor coming to visit the house at one point, and I think he recommended against the boy going outside.
???