Special Agent Walker by Mimi Barbour

Agent Beau Walker loves very few people.

The young girl, he drops off at the same school where minutes later a shooter begins the devil’s work, is the main one who holds his heart. Intrigued by the weird behavior of a mysterious beauty, Beau follows her into the building and they both find themselves at the same crime scene. He eventually pairs up with her to stop the coming violence.
Lori Page, an FBI profiler, spots a boy on a bus who’s acting strange. When he disembarks, she notices what appears to be a rifle in his backpack. Suspicions triggered and her instincts screaming, she follows him into his school where all hell breaks loose.
After the first incident, these two are forced to work together to stop more of these bizarre school shootings.
Too bad.
Too late…