In 2002, when Mark Henick stood on the edge of a Cape Breton overpass and let go, a stranger reached out and saved him from taking his own life. Last week, after launching a social media campaign to find the man, Henick received an email from Mike Richey, the man he remembered from that night at the overpass — fixated on Henick’s fingers, watching for the moment he feared was coming, when the teen let go and “leaned forward into nothing.”