The Devil and Her Son — Margery Allingham

A desperate woman's innocent escape from London turns deadly in this suspenseful mystery by the renowned author of the Albert Campion series.
 
Out of a job, a home, and luck, Mary Coleridge tells a seemingly innocuous lie in order to take a break from the pressures of London. Posing as her friend, Marie-Elizabeth Mason, Mary travels to the countryside to visit Miss Mason's wealthy aunt. The estate is grand, Mrs. de Liane eager and endearing, the food abundant and delectable. It is so nice, in fact, that Mary settles into her new life as Marie-Elizabeth, and even entertains the possibility of a new beau. But something is not right within the great house.
 
As Mary's stay extends, the sweet Mrs. de Liane begins to sour. The scheming matriarch has a devilish plan in store for her niece. And when Mary fails to cooperate, Mrs. de Liane decides to hold her captive. With no one to turn to and no way out, will Mary ever escape the house, and the oppressive evil that rules it?
 
The queen of classic crime, Margery Allingham, delivers a dazzling manor house mystery writing as Maxwell March.