Rivaled in Murder — Helen Gray

High school science teacher Toni Donovan cares about her students, so she sympathizes when two girls in her sixth hour class are devastated over the shooting of their close friend at the neighboring school they used to attend.

Once again drawn into solving a murder case, this time in a rival school where two teens
have been murdered, Toni must learn about rivalries and happenings behind the scenes. Can she help the police uncover the truth and bring a killer to justice?