February 1939. Desmund Shilling arrives in Morlington Hill, deep in the heart of Cornwall, having been given the post of Head of English at Morlington School for Girls by the hearty headmistress Lavinia Sixpence. Not far away, at Boothby Hall, Inspector Cribbage and Sergeant Salt are investigating the horrific murder of Lord Pluck - who is to blame? His grieving widow, Lady Penelope? His impetuous son, Viscount Robert? The no-nonsense cook or the handsome young school caretaker Joseph? Miss Sixpence and Mr Shilling mount their own investigation, and very soon, horrible truths come to light…