Continuity: When Barnabas enters Josette's room, the door is painted white. When he leaves and Natalie follows, the door has changed to varnished wood.
Mistakes
When Julia comes to the Old House to confront Barnabas, Willie lights a tier of four candles, but one goes out again, leaving only three burning. In full shot, candle 4 remains unlit. In a close-up from the same angle, candle 4 is burning and 3 is unlit. See more...
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Dark Shadows mistakes
Revealing: The mirror over Barnabas' mantel hangs flush against the wall. Yet when he shatters it, the candlestick he throws can be seen to go through the glass instead of bouncing back as it should have done.
Continuity: When Julia comes to the Old House to confront Barnabas, Willie lights a tier of four candles, but one goes out again, leaving only three burning. In full shot, candle 4 remains unlit. In a close-up from the same angle, candle 4 is burning and 3 is unlit.