When a friend vanishes under strange circumstances, Audrey and Ivy, who are desperate to locate their fellow student Lola Radcliffe's killer, find themselves embroiled in yet another mystery. The strange card left by the elusive Magpie Society is the only hint they have. Time is of the essence, and the police are perplexed, so Audrey and Ivy must probe even farther into the sinister secrets that their institution is keeping. But somebody is engaging in a dangerous game. And Audrey and Ivy must begin rewriting the rules in order to defeat them.