Continuity mistake: Hutch and Roman talk about vitamins and Dr. Sapirstein in Rosemary's living room. Look at the brown chair to the right of the window, it's obvious someone's been sitting in it as the back is all ruffled up. In the previous shot before Roman walks into the room it's not. (01:04:15)????
Continuity mistake: The phone rings while Rosemary straightens up the living room. Guy answers it and after the conversation they both go back into living room. No one has gone near them but the pillow on the left of the window and the magazine rack below it have been moved. In fact they move three different times. (00:33:35 - 00:35:05)????
Continuity mistake: Rosemary doesn't want to wear the necklace that Minnie gave her so she puts it in a drawer in her dresser as she says, "Tannis anyone?". When she walks up to the dresser there's a red handbag on the right of it that's not there in the close-up shot as she looks in the mirror. (00:33:15)????
Visible crew/equipment: Guy says, "Listen, I have to get out and walk around" after he gets the shocking phone call about Donald Baumgart. If you look closely at the left side of the screen against the wall you'll see the perfect moving shadow of a boom mike enlarged about twenty times because of it's proximity to a stage light. (00:35:05)????
Continuity mistake: Rosemary and Guy are interrupted on their romantic evening together by Minnie Castevet knocking at the door. Guy gets up to answer it and we see his two glasses, the smaller one filled with wine and a larger one filled with water placed right next to the candle. Two shots later when he returns, the glass of wine has been moved to the right and the candle has been removed. (00:38:30)????