Plot hole: After Sabrina and Tarloff have finished their rehearsal, Kris is able to pick the real sword with no hesitation. There are still six swords left in the basket (one is real, five are fake). They all look the same, so how could Kris know the exact position of the real one? (00:43:30)
The Robbery - S4-E4
Plot hole: Towards the end, Jake (Shirley's boyfriend), hangs the girls on a coat rack by the hoods of their coats. They try a few comical ways of trying to escape, when they could have simply unbuttoned their coats and slip away.
Hit and Run at Danny's - S2-E6
Plot hole: There are three mistakes in one scene when Quincy talks to the driver of the hit and run car and he finds seatbelt bruises on the right side of the throat under an arm sling. First mistake: The bruises will hurt a lot and won't heal if they are under a sling. Second mistake: At the beginning, when the driver struggles with the kidnapped lady while driving he has no seat belt on which touches his throat. Third mistake: When you put a seat belt on sitting in the driver seat the belt will surely touch the left sight of your throat - not the right. (00:39:05)
The Feminum Mystique: Part 1 - S1-E5
Plot hole: If her younger sister Drusilla is sent from Paradise Island to retrieve Diana, how did she get to Washington DC or wherever, she had no way of knowing where her older sister would be.