In 2012, a deranged grad student dressed as the Joker shot and killed dozens of movie goers at a Batman film opening in Colorado. Gun violence is so out of control in America that it has become a cruel joke.

Unlike most of Mickey Corrigan's novels, Project XX made itself known to her at that time, demanding to be written. Usually she researches, prepares, then writes. In this case, she wrote first, then did the research on gun violence, female violent crime, and school/mass shootings.

Males are almost always the perpetrators of mass shootings. But females are fully capable of shocking acts of violence and, in the US, military-style weapons are as easy to access as a new hairstyle.