Someone knows . . . Is it you? Are you the key to solving one of these heartbreaking cases? We don't know what we know. The mention of a name, a distinct scent unearthing a memory long buried, a shared reminiscence with someone who reveals that tiny detail. you'd forgotten - these are the things that spark our recollections. The sharing of a seemingly insignificant detail locked in our episodic memory could trigger a landslide of leads for investigators.