The Familiar, Volume 1: One Rainy Day in May is an American novel by writer Mark Z. Danielewski. Released on May 12, 2015, it is the first of a planned 27-volume story entitled The Familiar as well as the first book of Season 1, which includes The Familiar Volumes 1-5. This first volume takes place over the course of a single day: May 10, 2014. Its story weaves together nine different narratives from across the globe that continue to develop in subsequent volumes.