I can confidently say it consists of four volumes. Each book focuses on a different wallflower—Annabelle, Lillian, Daisy, and Evangeline—and their journeys to finding love in Victorian England. The first book, 'Secrets of a Summer Night,' kicks off the series with Annabelle's story, followed by 'It Happened One Autumn,' 'Devil in Winter,' and 'Scandal in Spring.' The way Kleypas weaves humor, romance, and historical detail into each novel is incredible. If you're into historical romance with strong female leads, this series is a must-read.