Mamie Garrison is a story of an ordinary woman who goes to extraordinary lengths to do what she knows is right. Everything in her young life has led her to this moment, this decision. She will embark on the greatest adventure of her life.

Approximately one hundred and fifty years later, her ancestor, Bella Garrison, inherits a house from her grandmother and finds Mamie's journals in a trunk in the attic. Bella with the help of her historian boyfriend, Andrew, will follow Mamie's journey through her writings, to find out more about this intrepid woman and what she achieved. However, someone is trying to stop them from learning about Mamie. What do they not want Bella to find out?

And...what is the meaning of the strange events occurring in Bella's house?