When the female doctor is standing over the hospital bed, talking, the way she is holding the clipboard changes between shots.
At the table, together for the first time, after the white-boxes of pizza arrive, Tom's hair style changes several times.
When the group arrives at the house, we clearly see it is a two storey house. Yet after they are already upstairs, they climb another set of stairs to go to the attic. There is clearly no third floor for an attic in the exterior shots of the house.