Sean's hands are on the table beside his plate of food. In the very next shot, his hands are cutting his food.
The cylinders of nitrogen gas are labeled N, nitrogen exists as a molecule of two atoms (diatomic) and is labeled N2, not N.
Nitrogen is inert, and is dangerous because it displaces oxygen causing suffocation. There is NO fluid buildup in the lungs as claimed. In addition, there is no such thing as "nitrogen POISONING" because nitrogen is not poisonous. Nitrogen makes up 78% of the air we breathe.
The actress who played Anne is 18 years older than the actor who played her lover Francis.