This journal is made up of different pages of Rendell Locke's personal journal. The purpose of the journal is to give readers a deeper understanding of Rendell Locke's character and backstory from the Netflix series, Locke and Key. Rendell is the patriarch of the Locke family who is tragically murdered in cold blood in front of his family. When the family moves back to Rendell's childhood home, they find out his history, and the history of their family, is far more mysterious than they could have ever imagined.