In Head Cases (2025), author John McMahon introduced the fictional Patterns and Recognition (PAR) unit of the FBI, comprised of a team with advanced analytical and technical expertise, led by Gardner Camden. In the first book, the FBI considers shutting down the unit, but in the second installment, Inside Man , the team has demonstrated its significant value. In their latest case, the team is investigating J.P Sandoval, who appears to be amassing weapons and may be plan