Continuity mistake: The position of the globe, before and after Sebastian spins it in the office, and stops it with his finger, changes between shots. The countries and colours visible noticeably differ.
Continuity mistake: As Sebastian returns to the Merteuil homestead after his jog, we see the back of his tee-shirt drenched in sweat as he approaches the door. Yet when see inside the home, the shirt is dry.
Continuity mistake: When we see Sebastian's father cuffed to the bed on his boat, the chain between the handcuffs is quite long. But when he gets home, and Kathryn goes to see him in the kitchen, the chain is much shorter.