Revealing mistake: Most of the car scenes entailed rain on the windows even though it otherwise had not been and was not raining, indicating the scenes were filmed on a rainy day. For example: Mary driving home; picking up Todd to go to the funeral; driving home from the church; driving back from rock climbing; and, Faith's car when she got to Luke's house. (00:17:35 - 01:34:12)
Revealing mistake: When Mary is talking to Luke in the kitchen, there are "moving shadows" on the wall to the left of the screen, apparently from the camera/film crew. (00:19:40)