[6] Casey moved to Toronto to return to his roots and was chosen to play the role of Trevor Lemonde in a short running CBC show called MVP.

[9] In July 2011, Casey appeared as Brad in a notable episode of Torchwood: Miracle Day, titled "Dead of Night".

Casey's part was initially intended to be a short term recurring role, but was upgraded to a series regular.

[citation needed] He obtained his first lead role for the movie Creature which was released in September 2011 and was unsuccessful at the box office.

[13][14] In 2016, he guest-starred in Marvel's Agents of S.H.I.E.L.D., appearing in the episodes "4,722 Hours" and "Maveth" as astronaut Will Daniels and Hydra Inhuman Hive.