Continuity mistake: The amount of beer in the glass that is glued to Victor's head keeps changing.
Visible crew/equipment: On the train at the start, after everyone has left except Victor and Margret, you can see a boom operator reflected in the door's glass panel. You can see him and it's even more noticeable when he lowers the boom for when Victor sits down. (00:04:05)
Revealing mistake: When Victor gets the glass stuck to his head, it's obvious there is a clear piece of plastic to stop the beer spilling out. This is obvious as it never goes past a certain point, but stops instantly.
Revealing mistake: At the start, the background of the country going by when on the train is very obviously a fake. It sticks out like a sore thumb.
Chosen answer: The episode is 'The Pit and the Pendulum' The first episode of series 4.
James Ransford ★