 By the novel "Roses Are Red", a new serial killer called the "Mastermind" is causing trouble with a series of bank robberies and murders, including that of Alex's girlfriend and partner, FBI agent Betsey Cavalierre.By the end of the novel, it is revealed that Kyle Craig himself is the serial killer, but no one knows the truth.In "Violets Are Blue", Craig, as the Mastermind, continues to taunt Alex and later reveals himself at the end of the novel.