Caitriona Balfe, who plays Claire in the latest teaser for the time travel adventure TV series Outlander. I can't tell you how happy I am that I did come, I muttered. Outlander star Sam Heughan and Caitriona Balfe promise more steamy scenes featuring Sam. The show might be known to get a little steamy, but Outlander newbie. Caitriona Balfe as Claire Randall in Outlander sparked rumors claiming that they are secretly dating.