Lemony Snicket's A Series of Unfortunate Events (2004)

Revealing mistake: When Violet and Klaus make the tent inside their bedroom in Count Olaf's house, they set up the light with the faces of their parents on it in front of it. Except when it shows the shadow of the object outside the tent, the edge of the picture frame isn't showing when it should. (00:21:40)

Count Olaf: I must say, you're a gloomy looking bunch. Why are you so glum?
Klaus Baudelaire: Our parents just died.
Count Olaf: [nonchalantly.] Ah, yes. How very dreadful. Wait, let me do that one more time. Give me the line again while it's fresh in my mind.
Klaus Baudelaire: Our parents just died?
[Olaf pretends to be shocked.].

Trivia: In some scenes, Klaus is taller than Violet, depite the fact that she is supposed to be two years older. The actor that plays him grew quite a lot while filming, and his costume had to be altered several times.

Question: Where were the children when the house was burning?

Ashlee Ambuehl