Continuity mistake: Gar enters a room and leaves the door open. Throughout the whole mirror scene the door is also open both when the camera looks at him and when the camera points at the mirror. However, when he is about to leave the room he needs to open the door as it has been closed inbetween us looking at Gar in the mirror and looking at him normally. (00:17:50 - 00:18:35)
Continuity mistake: Ruth Deaver is helping Alan Pangborn put on his tie. The camera is facing Ruth's back and we see Alan's face in the mirror. The camera then switches angles to face Alan's back and Ruth's face. Alan's collar which was popped straight up from the first angle is now perfectly down over his newly tied tie from the second angle. (00:24:55)
Chapter Two: The Dark Baptism - S1-E2
Continuity mistake: When Sabrina is about to sign the book with her blood, the drop of blood keeps changing where it's at. At first it hits a drawn line, then it's above the drawn line and is right below the last name. In the third shot, there is now a line space between it and the last name in the book. It continues to change depending on the camera angle.