When Catherine attacks the Detective, knocking him to the floor, the scene is cut (close-up/wide) between the Detective being slumped and sprawled.
When Catherine is talking to Dr. Harris about why she is in Kenneth's room, her dimple switches from one cheek to the other and back again.
Child Kenneth is seen with blue eyes at the beginning of movie, while older Kenneth has brown eyes.
Kenneth recording a movie on his mobile phone at the bar is holding his phone at a noticeable angle. The movie he is recording shows as vertical when shown to the audience.
Several characters (most frequently Jake) mention their lofty aspirations to attend "John Hopkins" for advanced medical training. The distinguished medical facility in Maryland is "Johns Hopkins".