Craig, a Special Agent for the Federal Bureau of Investigation, is initially a close friend of Cross and assists the detective in his high-profile investigations, and also occasionally asks Cross for help with his own cases. However, in the 2001 novel Roses are Red. Craig is revealed to be a criminal who calls himself "The Mastermind", having organized a series of brutal bank robberies and murders. He is eventually brought to justice by Cross. From Violets Are Blue onwards, Craig has been one of Cross' most formidable adversaries.