For the first time, Peter Lanza talks about his estranged son Adam - his early years as "a weird little kid," his growing isolation, his parents' years of struggling to diagnose, understand and treat his escalating mental health problems, Peter's own knowledge his son would have killed him "in a heartbeat." Peter has reached out to Newtown families - “I need to get some good from this. And there’s no place else to find any good" - but lives in "a state of sustained incomprehension about what has become the most important fact about (him.)" From The New Yorker's Andrew Solomon, who has written eloquently about mental heath issues and his own severe depression. Heartbreaking.