Time Out says
Secret cocktail bar hidden within Central speakeasy Foxglove
Like a matryoshka doll, Frank’s Library is a bar hidden within another bar, in this case, Foxglove. The bar’s concept is based on travels of fictional Englishman Frank Minza, the cocktail menu inspired by his globe-trotting adventures. Expect premium cocktails a cut above Foxglove’s usual offerings and potent barrel-aged tipples.