5 details you might have missed in season 7, episode 6 of 'Outlander'

The episode begins with Jamie (Sam Heughan) and Claire (Caitríona Balfe) helping civilians flee Ticonderoga via Lake Champlain after the fort falls into British hands, only for Claire to find herself back there when she's captured by redcoat soldiers.

As such, the 18th-century storyline feels very static, with little forward movement until the very final scenes when the couple is reunited and trek towards another Continental Army camp.

It could be the reason why the episode has been given the title "Where the Waters Meet," as that essentially is another word for Ticonderoga.

According to Collins Dictionary, the name comes from the Mohawk word tekontaró:ken, meaning "it is at the junction of two waterways."

While being kept as a prisoner of war, Claire unexpectedly meets William as an adult for the first time. Not knowing who he is, she accosts him while he is walking past and demands the soldiers prove food and medicine for her fellow prisoners.

It's only when William recognizes her that all the pieces fit together that she realizes that he is, unmistakably, Jamie's son.

When William ends their conversation by saying, "Your servant, Madam," she's taken aback, and it might be because she's getting a feeling of déjà vu. The charming, chivalrous young man in front of her has said the exact same phrase Jamie did when he formally introduced himself to her on their wedding day in season one.

Just as Jamie's time fighting on behalf of the Continental Army draws to a close, he has a chance encounter at the camp with Captain Daniel Morgan (Barry O'Connor), who enlists him to be one of his riflemen.

Expect to see more of Morgan given his importance in American history. Like Cornelius Harnett (James Weber Brown), Major Donald McDonald (Robin Laing), and Governor Josiah Martin (Eugene O'Hare), Captain Morgan is another real-life historical figure who helped lead America to independence.

The American pioneer and soldier, who was born to Welsh parents in New Jersey, was known far and wide both during his lifetime and after — as Claire mentions, she's read about him in history books — as one of the most respected battlefield tacticians of the American Revolutionary War.

It's safe to say that Roger, like audiences, has a lot of questions about how William Buccleigh "Buck" MacKenzie (Diarmaid Murtagh) has come to be in the 1980s, given the fact that he was born over 200 years before.

But after he catches Buck staring through the windows of Lallybroch (he is, it turns out the mysterious "nuckelavee" that his children have been talking about for the last few weeks), his first port of call is to punch him squarely in the face.

We hardly blame him, given the strife Buck caused Roger in season five. For audiences that might need a refresher, Buck is Roger's four-times great-grandfather, something Roger discovered after crossing paths with Buck and his wife Morag MacKenzie (Elysia Welch) during his journey from Scotland to America shortly after he traveled through the stones to the 18th century.

When Roger ran into Morag again at the Battle of Alamance during the War of the Regulation in North Carolina, in 1771, he was relieved to see that his blood relative was still alive and gave her a kiss on the forehead, which enraged Buck so much he became hell-bent on retribution.

As a result, Roger was beaten, bound up, and hanged by Buck and his men as a Regulator captive, an ordeal that he just barely survived.

"Outlander" did an interesting bit of casting when Buck MacKenzie showed up for the first time in season four, and had the role played by Graham McTavish, the same actor who had previously portrayed Buck's father, Dougal MacKenzie, before he was killed off in season two.

It wasn't the first time the show has had an actor inhabit two roles; in an inspired move, Tobias Menzies portrayed both Claire's first husband Frank Randall, and his villainous ancestor Captain Jonathan "Black Jack" Randall, in the first couple of seasons.

However, in the case of Buck, the team behind the show have recast the character this season, most likely because Dougal is also set to make a reappearance this season and they didn't want to confuse audience members.

While Dougal is long dead, Deadline reported last year that McTavish would be reprising his role as Jamie's uncle at some point in season seven (our bet is that it will be via a flashback), along with a number of other characters that have not been seen since Jamie and Claire left Scotland.

Episode six of "Outlander" season seven is now available to stream on Starz.com, and also airs at 8 p.m. Friday on Starz.