 Maeda wrote the episode after being inspired by the situation of a real @-@ life French journalist , Jean @-@ Dominique Bauby , who had been paralyzed and could only communicate by blinking his left eyelid . The character of Lukesh was in part inspired by Alfred Hitchcock 's Psycho and was created by Maeda in the hopes that he would go on to be a memorable villain . Effects expert Mat Beck created the unique visual sequence that showed Doggett and Lukesh traveling between the different universes . To create the effect of a parallel universe , every scene in the episode 's teaser was flipped so that the mirror image was shown . 
