Rule 34

Meet Edinburgh Detective Inspector Liz Kavanaugh, head of the Innovative Crimes Investigation Unit, otherwise known as the Rule 34 Squad. They monitor the Internet for potential criminal activity, analyzing trends in the extreme fringes of explicit content. And occasionally, even more disturbing patterns arise… Three ex-cons have been murdered in Germany, Italy, and Scotland. The only things they had in common were arrests for spamming—and a taste for unorthodox entertainment. As the first offic