 To create the effect of a parallel universe , every scene in the episode 's teaser was flipped so that the mirror image was shown . In order to render words correctly , letters had to be re @-@ written backwards so that they yielded the correct spelling . Monica Reyes ' Georgetown apartment address is 67 Bennett Avenue . This is a reference to Rod Serling 's address in Binghamton , New York . Furthermore , her apartment number 6 , is a reference to Patrick McGoohan 's number in the 1967 television series , The Prisoner . 
