Aliens threaten human existence in an epic 26th-century showdown. TV series based on the video game 'Halo'.
Starts: Pablo Schreiber, Shabana Azmi, Natasha Culzac, Björn Freiberg, Olive Gray, Yerin Ha, Bentley Kalu, Kate Kennedy, Natascha McElhone, Danny Sapani, Bokeem Woodbine, Ryan McParland