Relative Danger

Spunky widowed Cealie Gunther shows up early for her granddaughter Kat's graduation--only to learn graduation might not take place unless a custodian's death--accidental--or murder--is solved. With a deathbed promise to Kat's mother to watch Kat cross the stage for her diploma, Cealie becomes a substitute teacher there and finds fierce students and teachers. And someone aiming for her grandchild.