An almighty crash in the middle of the night alarms Lady Tania. On investigation she discovers her rebellious daughter, Mia, is missing along with a precious necklace. Frustrated with her wayward daughter and distraught at the loss of her beloved necklace Lady Bede summons Frank and Lu to her stately home. Upon arrival the pair spots a crew of workers led by the charismatic Ron Greenvale preparing for the annual Autumn Equinox Ball. Lady Tania issues clear instructions - she'll pay them £10,000 to crack the case, but only if they retrieve the missing jewel before the ball. When a bloodied top belonging to Mia is found in the grounds it seems darker forces than simple teenage rebellion are at play. The trail leads Frank and Lu to the ball itself where a heady mix of champagne and moonlight forces the eclectic cast of characters to reveal their true motives...
