Father looking for a bug bomb

Vada Sultenfuss is obsessed with death. Her mother is dead, and her father runs a funeral parlor. She is also in love with her English teacher, and joins a poetry class over the summer just to impress him. Thomas J., her best friend, is "allergic to everything", and sticks with Vada despite her hangups. When Vada's father hires Shelly, and begins to fall for her, things take a turn to the worse...