After the team puts publicly available crime data into Sophe, the platform exposes a serial killer plaguing Silicon Valley and the Bay Area by connecting previously unrelated murders.

Tanner's previous company claims Sophe was created using their copyrighted codes and legally threatens to shut down the organization. Also, Cavanaugh works with Tanner to solve the murder of a retired detective after his boss removes him from the case due to a personal connection with the family.