FBI-agent Don Eppes (Rob Morrow) har et hemmelig våpen i sin yngre bror, Charlie (David Krumholtz), et mattegeni som bruker ligninger til å løse forbrytelser.
Don and his team must determine if a shooting on the freeway was a random act of violence or the work of a serial killer preying on the citizens of Los Angeles.
S3E303 40 min