The lives of three unsuspecting individuals collide in unexpected ways within the confines of an independent Brooklyn bookstore during the close of World War I. A popular book disappears and reappears, seemingly at random, as we are whisked into a tale of friendship, intrigue, and love. Continuing the story of 'Parnassus on Wheels', bookseller Roger Mifflin is tossed into a strange set of circumstances that culminate in a most unexpected manner. The 'Haunted Bookshop' is meant to be a metaphorical turn of phrase to incite whimsy and curiosity. Yet Mifflin and company soon begin to wonder whether or not it might be viable to consider it literally as well.