Charlotte is wearing eye makeup even though she had just undergone eye surgery.
When Hank sets up to remove the worm from Cinco's wrist the sterile supply package is already opened, (presumably from a previous take).
While Evan and Paige are trying to tail Emma, they sit in an outdoor café, and hide behind an open newspaper. The newspaper is the "International Herald Tribune," which has not existed under that name since October 15, 2013, when it was renamed as the "International New York Times.".
After telling Evan not to take his eyes off the drop, Paige joins Evan in talking to Emma, meaning that no one's eyes are on the drop.