SUMMARY: He is moody and unpredictable. He is easy to love, affectionate, and friendly. Vulnerable, sweet, devoted to family. Impulsive, strong, and overflowing with emotion. Dreaming of home, always. Never quite at home, anywhere. This is Connor Biscan, a puzzle his family and caregivers have worked long and hard to solve, a boy who lives at the intersection of autism and mental illness. It isn’t so much a rare place — as many as half of autistic children suffer from mental health problems — but it can be a deeply baffling one. The overlap between these afflictions is hard to untangle; diagnosis and treatment can be very difficult. And a health care system meant to help can instead be frustrating, even harsh.