Continuity mistake: When the guard comes into the cell, he sees the rope made out of bedsheets, going out the window. From the interior shot, the bedsheets are in the corner of the window frame. From the exterior shot, the bedsheets are nearer to the middle of the window frame. (00:01:46)
Continuity mistake: When the guard approaches the cell, he is rolling a trolley with food and drinks on it. There is a kettle on the trolley with the spout facing towards the door. In the next shot, when the guard walks into the cell, the kettle has now rotated 90 degrees in between shots. There are also two plates on the trolley that are beside the kettle, but change to being behind the kettle when the shot cuts. (00:01:42)
