The Inner Room - Robert Aickman

In perhaps the most magnificent of what he called his "strange stories, Robert Aickman blurs the lines between memory, premonition and the hallucinated life. 

Lene, a woman now recovering from the losses of the Second World War, recalls a gothic dolls’ house of her childhood and the way in which its uncanny inhabitants entered her dreams. Most chillingly, the geometries of the house didn’t add up; there had to be a secret room inside it.

Years later, she comes across a life-size version in a wood not marked on any map . . .