To imitate Charlotte’s POV as she able to see for the first time, the camera was fitted with a protruding piece of plastic and wrapped in gauze, which slowly filtered in the light as it became unwrapped.
The Hamptons marina where Jeremiah and Divya meet Chase is actually located in Staten Island. The docks were devastated by Hurricane Sandy and have only recently been rebuilt. You can see a combination of old and new wood on the pier.
Before Paige and Evan’s stakeout, the last time the town square was seen was in the season 4 holiday movie, when it was covered in (fake) snow!
To replicate how objects would appear to Charlotte after her surgery, the VFX department manipulated the finished video to appear 2D rather than 3D.
To pull a worm out of Cinco’s arm, a prosthetic had to be molded from actor Ryan McCartan’s arm, and a fake worm inserted to be pulled out later.
The Shadow Pond office where Boris and Jeremiah have their late night meeting was meant to be shot at the castle, but due to time constraints was built and shot on a soundstage instead.