premise: Justin Chatwin performs as an actor.
hypothesis: Justin Chatwin ( born October 31 , 1982 ) is a Canadian actor . Chatwin is best known for playing Tom Cruise 's son in War of the Worlds , starring roles in The Invisible , Dragonball : Evolution , Urge and No Stranger Than Love , and supporting roles in Taking Lives , SuperBabies : Baby Geniuses 2 , and the Canadian film Funkytown . He is also a TV actor known for his work on Shameless , a Showtime dramedy . Prior to that , he had guest appearances on several television shows including Taken , Lost , and Orphan Black . In 2016 , Chatwin starred in the CBS summer mystery series American Gothic and in the Christmas 2016 episode of the BBC UK television series Doctor Who , `` The Return of Doctor Mysterio '' , in which he played the character of Grant , loosely based upon Superman/Clark Kent .