At Mullion Castle, sumptuous stately home, we meet the Earl and his family, who include his delightful daughters Patty and Boosie, and dotty Great-aunt Camilla. Old school chum, Charles Honeybath, who has been commissioned to paint a portrait of the Earl's wife, finds himself at the helm of a complex investigation involving ancestral works of art and a young under gardener, Swithin, who seems to possess the family features somewhat strikingly...

An unabridged reading by Hugh Laurie of Michael Innes' 'Lord Mullion's Secret'.