“Unsettling” is how I’d describe Carol Emshwiller’s short story “I Live With You,” although it is still captivating. It follows a shadow-like being who impersonates and sneaks into the house of a woman named Nora with intent to heavily mess with her life. At first, this doppelganger keeps their presence a secret, but as soon as suspicions arise, they decide to have a little fun. Moving things around, leaving out trash, stealing and replacing clothes, the doppelganger plagues Nora’s house like a ghost. In fact, the imposter even goes as as far as inviting a man over and trying to both hook up with him as well as get Nora some action. Of course, this plan turns sour quickly and the doppelganger leaves Nora, who has changed into a more confident and assertive woman because of her ordeal. “I Live With You” is intriguing and puts you on edge, and the concept really makes you think. I found it interesting how Nora tried to convince herself that nothing was going on, and when things got...