In the late 1960s, a man terrorized women from California to Cape Cod, brutally murdering at least five. By the time police finally caught up with the killer, they identified him as Antone Charles Costa. But she just called him Tony, the babysitter. Part memoir, part true crime mystery, this story follows three summers in the sad and painful childhood of a girl who called a serial killer her friend and of the investigation that finally brought him to justice.