Derek's face is suddenly sunburnt in the seance scene. It was not sunburnt in the previous scene.
When Abbey says "Now I know why he was so keen on anal," the shot changes in the middle of "anal," and her hand positions are entirely different between shots.
As the Vodka bottle hits the ground after levitating, the wire can be seen in the final few frames of the shot.
When the Vodka bottle levitates, the shadow of the puppeteer can be seen on the wall, at the left side of frame.