Producer Alix Spiegel talks to one of her closest friends, Sarah Blust, about the time Sarah met a stranger who, unbeknownst to her, had already spent years thinking about her. (29 minutes)

How much can you trust whether somebody who you think is close to you really is close to you? Saidu Tejan-Thomas Jr.’s been thinking about that question since a recent visit with some of his childhood friends in Sierra Leone. (37 minutes)