It is the year 1957 in Ponyville, and the world has become covered with the scent... Of mystery. In mysteries such as these, only one brilliant detective is cabable enough to solve them with her sharp senses and brilliant knowledge. That pony... Is Shadow Spade; Ponyville's greatest detective! It is now her job to investigate these mysteries, gather the clues and solve the case!

Note: This is both inspired and based on Rarity's favorite novel series of the same name