"The same as I have done in the past when it has happened," the Nightmare King said coolly. "It won't be the first time I have had to relocate. Not all are gifted with Lunar-blessed homes that cannot be intruded upon by humans," he added shortly. There was a veil of sorts that shrouded the residences of various spirits: Punjam Hy Loo, the pooka's Warren, the Workshop at the Pole-- these were only a few examples. Not only the Guardians who possessed such retreats but many spirits in the world, magic made it so that they could not be detected or discovered.

Pitch had inhabited many places over the long centuries since being released from Nightlight's pinned prison; the underground lair was the latest and the one he'd thought would have been the most secure, locked away from any moonbeams, Lunar's messengers and spies.