Continuity: When Tooms is in the cell right at the end, we see when his food is being brought over to him on the tray that there is a drink and a bun, when the shot changes to the other side of the door the drink and bun have swapped sides. When the shot changes back to the other side of the door, the tray is now the other way around and then when the shot goes back to the other side the whole tray has now disappeared.

Continuity: When Scully is having lunch with her friend just after the intro, we see at one shot from behind her she is holding a knife, then when the shot changes she is no longer holding it.