Even spies, operatives, secret agents and moles need to celebrate sometimes. Each year they slip from the shadows to attend a ballroom dance - an event as thrilling as it is secretive, carefully concealed to protect their identities. Beneath a veil of cloak and dagger preparations and clandestine arrivals, they take to the dance floor with exuberance, trading secrecy for spectacle and swirling through the night in elaborate costume disguises.
