The Knowing by Ninie Hammon

In the middle, normal garden-variety people must figure out how to live their everyday lives – how to survive! – after they discover that all those childhood horror stories… well, most of them are true.

Publisher Description

When the hot call comes over the radio: “Code Red! Active shooter at Carlisle Elementary School,” Police Sergeant Jack Carpenter has one job and only one job. Find the gunman; take him out. He rushes into the school, fully armed and focused on cold, hard reality. But what happens to him in the next few hours shatters the world as he has always known it. And in the next three days, everything Jack Carpenter believes about himself, about life and reality, about good and evil and the whole nature of the universe will be challenged.