[s1e4] The World In The Walls -

Quentin leads a music therapy group in a rendition of Taylor Swift’s "Shake It Off" to annoy the "orderly" version of Penny, testing if the real Penny’s consciousness is linked to the dream.

The Magicians: Season 1, Episode 4 - "The World in the Walls" [S1E4] The World in the Walls

When the real Penny eventually enters the dream, he is furious at the "racist" orderly caricature Quentin's mind created. Quentin leads a music therapy group in a

After helping Quentin wake up, Julia is betrayed by Marina, who burns her hedge witch "stars" off her skin and banishes her from the coven. Julia is betrayed by Marina

Julia visits Quentin and inadvertently reveals the illusion's falsity by mentioning she didn't see the "fireworks" Quentin cast—something she shouldn't have known about if he were truly non-magical.