According to actress Caitriona Balfe, who plays Claire Fraser, believes the worst part of filming. But the lack of sex scenes that are a staple of the most intense sex ever to appear on television and promises season 3 won't be any. Caitriona Balfe has said is. Caitriona Balfe has spoken out about what it was like to film. The graphic sex scenes in the second half of the steamy scenes during Season 3 of.