McNamara really did put together a nice book. She died before completion and the two guys who completed the book did have a different style.
McNamara had nice telling details. She - or maybe the afterword - mentions how she never writes guts and gore, supermarket crime. McNamara does not dwell on crime scene and autopsy details. The horror of the serial rapist and murdered shows through loud and clear.
Impossible to listen to this without thinking about the guy they caught after publication. McNamara was correct in thinking commercial databases like 23 And Me would provide the needed leads. She had many online collaborators and true crime hobbyists who would dedicate themselves to searching but most everything was done with online searching and pontificating. They were not researching the multiple case files that covered several jurisdictions. They were not re-interviewing multiple victims and witnesses.