'Outlander' star Charles Vandervaart teases Jamie and William's reunion in the midseason finale: 'It's a bit of a complicated thing'

• There is no new episode of "Outlander" on Friday. The midseason finale airs on August 11.
• Charles Vandervaart spoke to Insider about William and Jamie reuniting at the Second Battle of Saratoga.

There is no new episode of Starz drama "Outlander" this week, and the wait for the midseason finale (airing on August 11) is going to be even harder, given what Charles Vandervaart had to say about the possibility of a battlefield reunion between Jamie Fraser (Sam Heughan) and his character, William Ransom.

In the most recent episode, viewers saw both Jamie and William gear up for war as the storyline arrived at the first Battle of Saratoga in September 1777, something Claire (Caitríona Balfe), with her knowledge of future events, warned would be a turning point in America's struggle for independence.

However, as every history buff will tell you, there's a second, more important battle to come in the American Revolutionary War that will bring a decisive victory to one side.

It will also likely bring Jamie — who is fighting for the Rebels — and his British soldier son William face-to-face for the first time since season three, given the clues that have been littered throughout the season so far.

Speaking to Insider in an interview conducted before the SAG-AFTRA strike was announced, Vandervaart teased the possibility of a father-son reunion on the battlefield.

"We're definitely on opposite sides so it's a bit of a complicated thing," he said.

Vandervaart said that "things are a lot more complicated than" William might think, since "in a lot of different ways, he is quite naive at the beginning of the season."

Not only is William completely unaware of his true parentage, but as Vandervaart pointed out: "He doesn't really understand the violence of war and he's got a lot of learning to do."

"He doesn't quite realize how complicated life can end up being," he added.

Jamie and William meeting in battle seems increasingly likely when you consider the fact that William has crossed paths with almost every other Fraser since arriving in North Carolina to begin fighting for the British army.

William had a chance run-in on the streets of Wilmington with Brianna (Sophie Skelton), was rescued by Young Ian (John Bell) when he found himself lost in the Dismal Swamp, and, in the most recent episode, he was one of the British soldiers holding Claire captive (displaying his father's good heart, he eventually freed her).

In all three interactions, there has been a fraught undercurrent, since the other characters know of William's true parentage, while William himself is still in the dark.

Vandervaart said with a laugh: "Every time I meet someone who is supposedly related to me, I, William, don't know this."

"He never knows," he added.

Only time will tell whether William will one day find out who his true father is, but for now, a more important question is how things will go down if, or more likely when, Jamie and William find themselves standing opposite each other on the battlefield amongst the chaos and confusion of warfare?

The "Outlander" midseason finale will be available to stream on Starz.com on Friday, August 11. It will also air at 8 p.m. Friday on Starz.