Lavender Pearl’s wealthy parents disappear while on an expedition to Egypt in 1907. When Scotland Yard fails to apprehend any suspects, the 13-year-old heiress to a tea fortune appears next in line to vanish. Lavender and her governess, Miss Eliza Fitzmitten, hire up-and-comer detective, Archer Marbury, and his associate Lord Shadforth, to find the Pearl parents. Will Marbury and Lord Shadforth find them before the young ladies are whisked off to scavenge seaweed and hunt for the elusive giant glowing seahorse with Lavender’s uncle, marine scientist Dr. S.J. Whirly, and his ship’s shady captain and crew? Or will this be an expedition from which they, too, do not return?This is the first book in a mystery series set in Edwardian England.