Vertigo Secret Files: The Endless

From Another Universe:

Continuing the series of in-depth Secret Files with a Vertigo twist, this collection of inside info on The Endless, featuring three stories written by Neil Gaiman himself, as well as other creators including Paul Pope, who will provide a family portrait of the family that lives just beyond our world. DC promises sordid family secrets and all sorts of hitherto unknown family secrets, and editor Karen Berger stated that Gaiman has expressed interest writing the character profiles for the special.