Continuity mistake: When Nick goes to see Juliette/Eve, she's in a coma and unable to move and her hand and fingers are lying flat against her belly. In the wide shot of her, her hand is turned and her fingers are somewhat on top of each other, instead of lying flat. It goes back to lying flat in the next shot of her.
Blood Magic - S6-E10
Visible crew/equipment: When Nick finds Eve in the basement, the red tape mark used for Eve is visible on the floor in front of the column once Nick reaches the bottom of the stairs. (00:10:45)
