When Sabrina pushes Denny off the boat into the water, her left pinky is taped up, which it was not at any other point in this episode, including the preceding scene which took place immediately prior.
When the car is trying to run people over on the sandy beach the tires would not make squealing sounds when he fishtails. That only happens on pavement.
During the first robbery the burglar is shown rappelling to a room above the ground floor. But when he flees the balcony you can actually hear his feet hit the floor (presumably, the studio floor.)
When Bosley starts to tail Mrs. Machlin at the hotel, he's driving a Lincoln Town Car with no opera windows. When Mrs. Machlin arrives at the gas station with Bosley tailing her, he's now driving a Lincoln Town car with opera windows.