Grave Danger

Be a chaperone they said.
It'll be fun they said.
They lied.
Someone died.
When Gwen agreed to accompany her son's History class to Elmwood, the city's largest Active Historical cemetery, She never dreamed that her day would end with getting stuck with a know it all parent, finding a dead body, above the ground or becoming a hostage to a killer.
Can Gwen save her son and his friend? Can she stop the bad guy from escaping the forty acres of burial grounds before her detective husband can get there to save them?