Halo: Genesis

Halo: Genesis will be the beginning of the Halo Prequel Trilogy.

Plot
The plot focuses on the Forerunner-Flood War.

Cast

 * Billy Zane as Ur-Didact
 * Benedict Cumberbatch as Gravemind
 * Glenn Close as Librarian
 * Lee Pace as Bornstellar/IsoDidact