From publisher blurb:
This print title collects two of our popular "Lost Masterpieces" scenarios in a Double-A-Side softcover Flipbook format[*]. Purchase of this print title also includes the electronic versions of the scenarios as well as rulebook SRDs for both Jazz Age and Modern versions of Cthulhu Eternal.
The House on the Promontory: Set in 1920, this classic Lovecraftian tale of terror revolves around a crumbling house situated on a lonely promontory on the Massachusetts coast. Hired by the young author who recently inherited the old house, they are asked to solve the mystery of the terrible dreams he suffers whenever he sleeps in the house.
Dark Visitations: This is a collection of two short scenarios -- "A Night on Bald Mountain" and "Reclamation Project" -- both of which pit the Protagonists against the Mi-Go, one of HPL's most imaginative creations.
This format stitches two scenarios into a single volume, with the second printed upside down relative to the first. This creates a book with two "fronts" -- the technical bookbinding term for this format is "Tête-bêche"