The Blue Chest of Arabella King

Plot:

The King's Aunt Arabella has just passed away. For fifty years in the King's attic sat her blue chest, which she asked to be opened only after her death. She left it there when she left Avonlea for good shortly after her fiancé committed suicide the day before their planned wedding. There is great anticipation amongst the family of treasures in the chest, but they find primarily moth eaten wedding mementos. Sara is certain that there is more - why would Arabella forbid the chest to be opened otherwise - and she indeed does find something hidden in the chest, something...