When Molly McCloskey was a young girl, her brother Mike - fourteen years her senior - started showing signs of paranoid schizophrenia. By the time Molly was old enough to begin to know him properly, he was frequently delusional, heavily medicated, living in hospitals or care homes or on the road.
Years later, through reading an astonishing archive of letters preserved by her mother and grandmother, and interviewing old friends of Mike's, Molly began to piece together a picture of his life, before and after the illness struck - the story of how a gifted and well-liked student and athlete was overtaken by a terrible illness that rendered him unrecognizable. Now, she tells that story - which is also the story of her own demons and of the ways in which a seemingly perfect family can slowly fall apart.