HBO's "I'll Be Gone In the Dark" Is a Complex Portrait of Serial Killer-Hunter Michelle McNamara

In the years leading up to her death, Michelle McNamara haunted message boards, libraries, and Sacramento families to get to the bottom of the case that obsessed and consumed her. McNamara, a true crime blogger whose interest in serial killers morphed into a compulsive desire to hunt and catch them, is the subject of a new HBO documentary series. The first episode, which premiered last Sunday, presents a small window into the mind of a woman who hunted serial killers until she accidentally overd...