A Ghost of Gunfire — Dorothy Bodoin

Months after gunfire erupted in her classroom, leaving one student dead and another wounded, Jennet Ferguson begins to hear mysterious gunshots inaudible to anyone else. While Jennet fears she may be losing her grip of reality, she encounters a threatening stranger near her home. Soon after, she finds a collie tethered to a tree in the woods and left to die. When another collie meets the same fate, she resolves to find the abuser and put an end to his demented activities.