In the lush garden of the Venable estate lies the shadow of a terrible secret. After the mysterious death of Sebastian Venable the previous summer, his mother, Violet, is determined to protect the family reputation at any cost, even as his cousin Catherine insists on revealing a shocking account of Sebastian’s final days. As conflicting stories emerge, a doctor is called upon to judge Catherine’s sanity and must decide whether her story is madness... or something far more disturbing.