Penelope Lumley must deliver a speech at her alma mater while simultaneously uncovering a conspiracy threatening the school's traditions and traditions. When invited to speak at the Celebrate Alumnae Knowledge Exposition, Penelope Lumley anticipates a straightforward task. However, she quickly finds herself entangled in a web of challenges, including a formidable Judge Quinzy leading the Swanburne board, Baroness Hoover disrupting cherished school traditions, and Lord Fredrick's peculiar demands. The mystery deepens with the girls' sudden abandonment of their hair poultice and the discovery of a cryptic diary, all of which Penelope must unravel with the help of unexpected allies.

The Incorrigible Children of Ashton Place series is generally well-received for its whimsical blend of mystery, humor, and fantasy, appealing to middle-grade readers. Reviewers often praise Maryrose Wood's inventive storytelling and the charming, eccentric characters that populate the narrative. The books are noted for their engaging plots that balance lighthearted adventure with intriguing puzzles, making them a delightful read for younger audiences. The series consistently delivers on its promise of quirky fun and satisfying resolutions.