The Game of Thrones prequel continues to add to its line up. We already know that Naomi Watts, Josh Whitehouse, and Miranda Richardson are onboard; now we can add John Simm, Marquis Rodriguez, Richard McCabe, John Heffernan, and Dixie Egerickx to the line up.

What makes is scary is that even with these big names onboard we know there are still more to come!

The pilot begins filming this summer.