The Guideposts Nantucket Dreams Trilogy Series Complete 1 – 3 Cozy is a collection of women’s fiction and mystery novels by the author Guideposts. The series includes the novels “Seaside Harmony,” “Seaside Secrets,” and “Seaside Summers,” all of which are intended for an adult audience. The cozy novels are in paperback format and were originally published in English in the 2010s. Each book in the series offers readers a captivating narrative filled with mystery and intrigue, making it a must-read for fans of the genre.