There's a stranger in my house

"As long as you don't know, you'll be safe."

When my husband returned from his trip, he brought something back with him. Or rather, something took his place. Trapped in my own home with a perfect copy of the man I love, I must play along with his terrifying charade. But as the entities around me begin to shed their human skin, I realize the nightmare is much bigger than just one impostor.

Who is lying next to me? And is it already too late to escape?