Something Outlander fans have wanted to see for a long time is the audition footage from Sam Heughan and Caitriona Balfe. In preparation for the release of season three to Blu-ray and DVD, one special feature is the final chemistry test before Caitriona Balfe got the part of Claire. In the video below, you can see they used the ultimate love/hate fight from season one for the chemistry test. Showrunner Ronald D. Moore explains the context before the footage.
Source: ET Online
