‘Jack Ryan’: Abbie Cornish to Return as Cathy Mueller, and Fans Are Thrilled

Jack Ryan’s love life may be heating up. Abbie Cornish, who​​ played Cathy Mueller in Jack Ryan Season 1, will be back for season 4 of the Amazon Prime Video series. The show stars The Office alum John Krasinski as CIA analyst Jack Ryan.  

Who is Cathy Mueller in ‘Jack Ryan’? 

Abbie Cornish of 'Jack Ryan' wearing a red blouse on the red carpet of a 'Free Solo' screening
Abbie Cornish | Paul Archuleta/Getty Images for Film Independent

In Jack Ryan Season 1, Cornish played Cathy, a doctor who specializes in researching infectious diseases. After she meets Krasinki’s CIA agent character, the two embark on a relationship.

In an interview with Collider before the first season premiered, Cornish talked about what drew her to the character.

“Dr. Cathy Mueller is an interesting character,” she said. “She’s smart and intelligent. My research on infectious diseases has been so fulfilling. There’s just so much information and it’s so nerdy. I love that! It’s so much fun.”

Though Jack Ryan Season 1 seemed to be setting things up for a long-term relationship between Cathy and Jack, Cornish’s character didn’t appear in season 2. Cathy’s conspicuous absence wasn’t addressed directly, but Jack did say that he was single and was involved with another woman.  

Cathy is also a character in Tom Clancy’s Jack Ryan novels. In the books, she and Jack are married with kids. So, for fans steeped in the “Ryanverse,” having the character vanish from season 2 without any explanation was a bit odd, to say the least. 

Abbie Cornish to appear in ‘Jack Ryan’ Season 4 

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We still don’t know exactly what happened to Cathy and why she and Jack (presumably) broke up between seasons 1 and 2. But it turns out the character hasn’t been written off the show for good, as some fans might have feared. 

Cornish will appear in the just-announced fourth season of Jack Ryan, Deadline reported. But it doesn’t sound like she’ll be in season 3, and there’s no word on how her character will be reintroduced. And it will likely be some time before we see any episode featuring Cathy, given that season 3 just wrapped production and a release date hasn’t yet been announced. 

Fans react to Cornish’s return

When the official Jack Ryan Twitter account confirmed that Cornish would be coming back to the show, the response was overwhelmingly positive. 

“Finally some good news,” one person tweeted in reply. 

“It’s about time!  Season 2 completely forgot her character,” another wrote. “I can’t wait to see her and Jack’s relationship further explored.”

“Will be interesting to see how you guys incorporate her back,”  commented another fan. 

Michael Peña also joins ‘Jack Ryan’ Season 4 cast 

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Jack Ryan Season 4 will also feature Narcos: Mexico actor Michael Peña in an as-yet-unannounced role. According to a message from the show’s Twitter account, his character “brings new skill to the team.” 

“No fricking way!!” one fan tweeted in response to the casting news. “Michael Peña and John Krasinski fighting crime and statistics side by side or fighting each other, either way such good casting!

Jack Ryan Seasons 1 and 2 are streaming on Amazon Prime Video. 

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