Watch on Soap2day. "Slay Utterly" is a modern adaptation inspired by the infamous 1912 ax murders in Villisca, Iowa. At the center of the story is an FBI agent who links the gruesome massacre to others throughout the nation's heartland. Faced with challenges resulting from poorly-controlled rural crime scenes, the agent struggles to stay on the bloody trail of the brutal "Ax Man," who spares no one in his path.