The Guest Room

Hannah Cole has a small, tidy life: a second-grade classroom, a husband who comes home late, and a guest room that was supposed to be a nursery. Then her college roommate Avery calls after twelve years — divorced, evicted, nowhere to go. Hannah gives her the guest room.
Within days, Avery is wearing Hannah's clothes, answering her phone, and cooking her husband's favorite meals. Then Hannah finds entries in her own diary — in her own handwriting — that she didn't write.
As Avery settles deeper into Hannah's house, her marriage, and her life, Hannah has to face the question she can't stop asking: is her oldest friend replacing her... or is she losing her mind?