Mark Frost, co-creator of the landmark television series, enlarges the world of Twin Peaks, placing the unexplained phenomena that unfolded there into a vastly layered, wide-ranging history, beginning with the journals of Lewis and Clark and ending with the shocking events that closed the finale. (Leads into the upcoming Showtime series.).

The material in this dossier is confidential and approved for FBI eyes only. It was found on-site and appears to have some relationship to an investigation conducted in northwest Washington State by Special Agent Dale Cooper. The case involved a series of homicides in and around a small town called Twin Peaks; the case is consider closed but the crime scene is still under active investigation. Give this your fullest attention, and get back to Deputy Director Gordon Cole with your findings, ASAP.