Summary

In Sacramento, 2012, McNamara meets with a woman she calls the Social Worker, to talk about a group of amateur sleuths who meet online to post theories about the EAR-ONS (East Area Rapist and Original Night Stalker). The EAR-ONS board has exhaustive crowdsourcing of possible leads submitted by members to map and detail every crime-scene location and witness sightings. The Social Worker operates as a gatekeeper between Sacramento investigators and the board community. She takes McNamara on a driving tour of EAR hot spots in Sacramento. The Social Worker warns that she needs to take care of herself, otherwise the obsession may consume her. McNamara relates to her obsession. McNamara meets with a thirty year old man from Florida called the Kid. The Kid has spent over forty thousand hours data mining all records of people who lived in Sacramento during the...