The Traveler Piper's Secret — K.J. Dahlen

When Watcher Jack Fielder finds two threats to mankind, he must determine which threat is more credible, but before he can do his job, another threat is uncovered in the form of another Watcher gone rogue. Jack must protect an innocent while dealing with rogue Harry Neal. Harry wants to bring about the end of the world as mankind knows it and Jack can't allow that to happen.