The episode features several surreal musical performances, including: singing "The Low Spark of High Heeled Boys". Singing Corpses rising to provide back-up vocals.
: In the noir world, they are "The Watchers," ominous figures with rayguns that "burn through flesh". Fringe subtitles English S02E20
The story is more than just a whimsical fantasy; it is a confession of Walter's deep-seated guilt. they are "The Watchers