The play focuses on the seemingly perfect little girl, Rhoda Penmark, who is able to charm her way into getting just about anything she wants. Anything, except a highly coveted penmanship medal that her teacher has awarded to Claude Daigle, one of Rhoda's classmates. During a school outing near the shore, Claude goes missing and it is soon discovered that Claude has drowned near a pier. Rhoda's mother, Christine, begins to suspect that Rhoda had something to do with the boy's death when she finds Claude's penmanship medal hidden in Rhoda's room. Gradually Christine comes to believe that Rhoda may have been behind other sudden deaths surrounding the family.

Please be advised that Bad Seed is a psychological thriller that may be inappropriate for audience members under the age of 12.