Plot hole: SPOILER ALERT Louise Bergman murders her father Marco, who is blind, by making a tape of the sound effects of a blazing fire along with her voice urging him to jump to safety out of his upper floor window. A man who has been blind for two years would have learned to rely on his other senses, and would immediately suspect something was wrong - he would feel no heat from the fire nor smell smoke.
Deliberate mistake: When Joey and Jonathan get in Joey's car at Metropolis (just before heading to the police station), the car has headrests. When they get to the police station, see Lance Gessler leaving and then follow him, the car no longer has headrests. Obviously removed so as not to obstruct the actors.
Continuity mistake: Hugo puts his mug down on the table before going to fetch a book. As turns back from the shelf, the mug is back in his hand, and then as he crosses the room, it is gone again. (00:35:55)
Chosen answer: It was a bottle of turpentine.
Methylated spirit, always coloured purple.