House of Doors — Chaz Brenchley

War widow Ruth Taylor arrives at RAF Morwood, the great house formerly known as D'Esperance, hoping that nursing badly wounded airmen will distract her from her sorrows. But almost as soon as she enters the house, she experiences strange visions and fainting spells, and the almost overwhelming sensation of her late husband's ghostly presence. For D'Esperance is a place of shadows and secrets--and as the strange occurrences become increasingly menacing and violent, Ruth is forced to confront a terrible possibility: that her dead husband might be the cause....