Sophie Skelton and Richard Rankin of 'Outlander' discuss Brianna and Roger's "very final farewell."

The second episode of season seven of "Outlander" was all about introductions and goodbyes. 

With the Revolutionary War in full swing, Jamie Fraser's (Sam Heughan) redcoat-wearing son William Ransom (Charles Vandervaart) made his first contact with the Frasers, allowing him to meet his half-sister Brianna MacKenzie (Sophie Skelton). 

In other news, Allan Christie (Alexander Vlahos) reappeared in the aftermath of Malva's (Jessica Reynolds) murder, only to meet his end after confessing to the crime. 

Both were unexpected, but one storyline that viewers did see coming in this episode was the birth of Brianna and Roger's (Richard Rankin) second child, a girl named Amanda. 

Even so, when Claire (Caitrona Balfe) discovers that her new granddaughter has a heart problem that exceeds her skill level as a surgeon, the story takes an unexpected turn.  

She informs the couple that their daughter requires modern medicine or she will die. 

By the end of the episode, Brianna and Roger have made the heartbreaking decision to return through the stones to their own time period, which Skelton and Rankin told Insider is a pretty final decision. 

Skelton stated that she believes Brianna will see her mother and father for the last time. She claimed she acted out the scene in which they exchange their final words at Ocracoke's stone circle. 

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