Aspiring filmmaker June Masterson has high hopes for her first documentary, the true story of the disappearance of famed mystery author Greer Larkin. June learned about the vanishing at age fourteen, locked down on her family's isolated commune. Now, the deeper she digs into the project, the darker the story gets.

Everyone has a theory. Greer's mother, Blanche, and her best friend, Rachel, believe that Greer's fiancé, Jonathan, is the culprit. Greer's agent is convinced that Greer committed suicide after a debilitating bout of writer's block. And Jonathan claims it was either Greer's controlling mother or Rachel, whose attachment to Greer went way beyond friendship.

In desperation, Rachel gives June a suitcase full of Greer's most personal writings in hopes of finding proof against Jonathan. Then Rachel turns up dead. As June pores over Greer's writings, she makes a devastating discovery that could finally reveal the truth about the author's fate. But now, June finds herself in the sights of a killer who'll stop at nothing to keep their darkest secret.