Continuity mistake: In the scene where the four siblings are at the model home discussing their mother, Linday's coat keeps changing position on the sofa.
Continuity mistake: When Tobias is directing the play, he slams his folder down on the floor just in front of his chair. A few seconds later the folder has moved and is now facing in a different direction and is several feet away from the chair.
Continuity mistake: When Tobias meets with the school principal, the number of bites taken from the principal's sandwich changes between shots.
Chosen answer: "The One Where They Build a House," S2E2.