Outlander estrella Breaks Down Jamie's Confession, AKA 'The Biggest Departure We Made This Season' 

‘s print shop episode contains mild spoilers for possible upcoming events in Season 3.

novel series to memory, there was a moment in Sunday’s episode that likely surprised you — because it’s a pretty large change from the books.

Outlander Reunion: Caitriona Balfe and Sam Heughan on Jamie and Claire’s ‘Naked, Vulnerable’ Homecoming

The “A. Malcolm” found Jamie confessing his parentage of young William soon after Claire’s return to 18th century Scotland. In Gabaldon’s

, which provides the framework for Season 3 of the Starz drama, the revelation about his secret son comes much later in the narrative and is bundled with another shocker (for Claire): the knowledge that John Grey is a) gay and b) into her husband.

The book’s scene takes place in Jamaica, where Jamie and Claire head [Spoiler alert!] in search of Young Ian, who’s been kidnapped. It just so happens that John Grey is serving as a governor in the British colony, and when Claire oversees a close moment between her husband and his former warden — the moment he gives Jamie the miniature of William, to be exact — she interprets it as something much different. In fact, in the book, it’s 

who first alerts Mrs. Fraser to the fact that the young earl of Ellesmere has Fraser blood running through his veins.

“That’s probably the biggest departure we made this season,” star Caitriona Balfe tells TVLine, explaining that the writers’ choice to change the timing of events was because “they felt that maybe it wasn’t believable that Jamie wouldn’t tell her everything.” For what it’s worth, she approves of the switch. “I think it fits very well in that scene where Claire is sharing about Brianna, that Jamie would at that point want to share that he has a son,” she says. “It ended up working very beautifully in that scene. It becomes about the children, their legachy and what they’ve created in this world.”

She adds that she and co-star Sam Heughan asked the writers early on to amplify the discussion of Brianna and William to include the Frasers’ other child. “I was like, ‘Can we please put in just even the tiniest thing about Faith?’,” she recalls. “Because I think anyone who has lost a child or had a miscarriage or anything like that, it’s something they would never forget and that is still part of this family.”

She adds: “That was beautiful, that we have the scene about the three children in their lives.”

If you like TVLine, you\'ll LOVE our weekly newsletter. Click here to subscribe.

Dancing With the Stars Week 6 Recap: Did the Right Couple Go Home?

Madam Secretary Adds Grey\'s Alum Sara Ramirez as Series Regular

NCIS\' Duane Henry Talks of Reeves\' Secret Demons (Plus One Hairy Reveal)

Ray Donovan Renewed for Season 6 — But a \'Big\' Change Is In Store

TVLine Items: Arrow Mom Returns, Episodes Vet Visits P.D. and More

1Ratings: Once Upon a Time Slips to New Low, Hawaii Five-0 Tops Night78

2The Walking Dead Season 8 Premiere Recap: Harm Offensive64

3Madam Secretary\'s Bebe Neuwirth Exits — Find Out Why Nadine\'s…52

4Sophia Bush Breaks Silence on Chicago P.D. Exit: \'I Left Because I…50