The line "What country, friends, is this?" murmured by Elisabeth Moss is a quote from Shakespeare's "Twelfth Night."
Imogen quotes Shakespeare's "Twelfth Night" again at the end of this episode: "Such as we are made of, such as we be." Not only do Imogen and Adilah both enjoy Shakespeare, but that play in particular has a plot that hangs on characters who disguise their true identities, as "The Veil" does.