Continuity mistake: During the funeral, 2 is hit with a rock thrown by a young boy. In subsequent shots, the wound on his forehead changes size and configuration several times.
Continuity mistake: S1: E6 Loco - FBI Agent Quiñones places the whiskey bottle down on the table with the back label showing, but in the next shot, the front label on the bottle is showing (Wild Turkey 101). (00:29:38 - 00:29:59)
Continuity mistake: When Tom initially breaks into his studio, the "Hidden Agenda" photograph has a plaque underneath it. When he returns later with Dr. Bellamy, the plaque has disappeared.
Continuity mistake: The ground is dry and clear throughout the entire episode in all exterior scenes, until the snow covered ground in the background when Duncan is driving to Ellen's house about 2/3 through the episode.