Tracey Ullman and Sam Spruell have also joined the cast.

Earth’ is growing its cast for season two. Tracey Ullman, Sam Spruell, and Jerome Flynn have all signed on, according to ...

And everything we know so far.

Alien: Earth' Season 2 has added three new cast members to its ensemble cast. 'Game of Thrones' stars Tracey Ullman, Sam ...