Continuity mistake: Harriet's bedroom appears to be in Hartford rather than Mrs. Goddard's school. In the scenes shot inside Harriet's room, we see that she has a distinctive window that is a square set within a circle. In shots of the exterior of Hartford, that window is visible, while shots of the exterior of Mrs. Goddard's show a building without features that would have windows of such style.
Episode #1.4 - S1-E4
Revealing mistake: Mrs. Weston's baby is obviously a doll.
Episode #1.4 - S1-E4
Continuity mistake: Mr. Knightley has just confessed his love for Emma. She is about to kiss him and is holding his face with both of her hands. Her left index finger moves from being right on his ear to being behind it and further down on top of his hair. (00:48:40)
