

England, 1925. At a lavish country house party, a practical joke appears to have gone horribly, murderously wrong. It will be up to the unlikeliest of sleuths—the fizzingly inquisitive Lady Eileen "Bundle" Brent—to unravel a chilling plot that will change her life, cracking wide open the country house mystery.

A lavish party at the Caterham estate results in sore heads the next day — and one guest not waking up at all. Grief pushes Bundle to search for answers.

Bundle's desperate search for the killer takes her from London's seedy underbelly to a country house gathering which could change the course of history.

After the police catch an intruder and Battle finds two bullets, Bundle makes a shocking discovery. Can she finally uncover the mastermind behind it all?