(written from a Production point of view)
Linda Robertson is an actress who worked as photo double for Pamela Winslow in her role of Ensign McKnight on the Star Trek: The Next Generation fourth season episode "In Theory" in 1991. She doubled Winslow in scene 87B, a special effects blue screen scene in front of the main viewer on the bridge. This scene was later re-used in the following episode "Redemption". Robertson shot this scene on second unit with Jonathan Frakes and Brent Spiner on Thursday 18 April 1991 on Paramount Stage 8.