When a party thrown by the reclusive Lord Unsworth is marred by murder, his loyal secretary, Mr. Quayle, must unravel a web of red-herrings and old family secrets in this English country house mystery.

"I do not wish to disturb you, your grace, but there is a body in the garden...."

England, 1925. When a strange young woman is found murdered on the grounds of Unsworth Castle, the duke and his family are astounded at first, but quickly become enraged when the police begin asking all sorts of impertinent questions.

And when suspicions dare to fall on one of their own, it is up to Mr. Quayle, Lord Unsworth's exceedingly efficient secretary, to find the true culprit and save the House of Unsworth from scandal and ruin.

A Most Efficient Murder is the first in the The Mr. Quayle Mysteries.