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‘Nocturne’ Star Stephen Graham On Playing “Chameleon” Serial Killer Jurek Walter And His “Ambiguous Sexuality” With Karl

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Culkin, R. (2026, October 30). ‘Nocturne’ Star Stephen Graham On Playing “Chameleon” Serial Killer Jurek Walter And His “Ambiguous Sexuality” With Karl. New York Post. https://decider.com/2026/10/30/nocturne-series-stephen-graham-interivew-jurek-walter-rory-culkin/

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New York Post · collected 2026-10-30 · by Rory Culkin

Quick Summary

Stephen Graham stars in Apple TV's psychological crime thriller "Nocturne" as Jurek Walter, a charismatic and manipulative serial killer locked up in a psychiatric hospital. The show, based on books by Lars Kepler, explores Walter’s influence over new nurse Karl (Rory Culkin), highlighting Graham’s physical transformation and vocal performance to bring depth to the character's psychological tactics. Graham discusses his preparation including voice coaching and physical training to portray Walter as both menacing and charming, aiming to highlight Jurek's ability to exploit others' vulnerabilities.
Written by AI on 2026-10-31, from this article's own text only (the story summary below draws on all the coverage).

AI analysis

Story summary

Stephen Graham stars in Apple TV+'s new psychological crime thriller Nocturne, playing a sociopathic serial killer named Jurek Walter, who is suspected of taking more than half a dozen lives and kidnapping two young siblings. The show, based on books from the "Joona Linna" series by Lars Kepler (husband and wife co-authors Alexander Ahndoril and Alexandra Coelho Ahndoril), features Graham in a demanding role as Walter, who is locked away in a concrete cell at Riverside Psychiatric Hospital but still manages to manipulate events. Graham discussed his preparation for the role over Zoom, mentioning physical transformation, voice coaching, and studying psychopathy and sociopathy, ahead of the show's premiere on October 30, 2026.

Written for “Stephen Graham Interviews About Nocturne Role” on 2026-11-01, grounded in this article and the 0 other(s) covering the same event.

Story

📰 Stephen Graham Interviews About Nocturne Role
Entertainment · 1 article(s) covering the same event.

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This article reads unscored and hedges 3% of its claims. Each row says how that neighbour differs.
New York Post
Hedges 7 of 59 claims Outlet record 66/100
“The articles discuss the same TV series 'Nocturne' but describe different aspects: one is a general cast guide, while the other focuses on an interview with Stephen Graham about his character.”
How this article was measured signals, leaning charts, publisher record, byline, topics and claims

Signals How these are calculated →

Claims extracted
35
sentences that state something as happening or true
Uncertain
3%
1 of 35 hedged ("reportedly", "may", "according to")
Leaning
not political
takes no side on a contested political question
Publisher signals
66/100
New York Post's corrections and hedging, across everything collected from it. Not a measure of accuracy.
Outlets on this story
1
Entertainment
Same framing elsewhere
1
articles that frame the event the way this one does
Analyzed 2026-10-31 · how these are computed

How this is being covered How these are calculated →

Article leaning vs. publisher reliability
Source leaning vs. consistency

Publisher

New York Post · 15756 article(s) · 35 correction(s) detected
Running correction rate · 35 correction(s)

Who wrote this

Rory Culkin
1 article(s) here · 1 carrying a prediction
🔮 “A lot of it, at the very beginning, once I’d read the script and I had an idea of where I might go, it was the physical aspect that I wanted to create,” Graham explained over Zoom ahead of Nocturne‘s October 30 premiere.
The only article under this byline in the corpus.

Topics

Apple TV‘s DECIDER Riverside Psychiatric Hospital Zoom

Subjects

Graham PERSON · 11× Jurek PERSON · 6× DECIDER ORG · 3× Karl PERSON · 3× Culkin PERSON · 2× Alexander Ahndoril PERSON · 1× Alexandra Coelho Ahndoril PERSON · 1× Apple TV‘s ORG · 1× Lars Kepler PERSON · 1× Stephen Graham PERSON · 1×

Narrative

Based on The Sandman and Lazarus, two books from the 10-book “Joona Linna” series by Lars Kepler (husband and wife co-authors Alexander Ahndoril and Alexandra Coelho Ahndoril), Nocturne unearths the infamous investigation into Jurek Walter (Graham), a man suspected of taking more than a half dozen lives and kidnapping two young siblings.
framing: assertive · carried by 1 article(s) · first seen 2026-10-31
🔮 “A lot of it, at the very beginning, once I’d read the script and I had an idea of where I might go, it was the physical aspect that I wanted to create,” Graham explained over Zoom ahead of Nocturne‘s October 30 premiere.

Claims (35 extracted, 1 hedged)

Apple TV‘s new psychological crime thriller, Nocturne, shows Stephen Graham like you’ve never seen him before, as a sociopathic serial killer who knows how to turn on the charm. asserted
who → show → charm
Based on The Sandman and Lazarus, two books from the 10-book “Joona Linna” series by Lars Kepler (husband and wife co-authors Alexander Ahndoril and Alexandra Coelho Ahndoril), Nocturne unearths the infamous investigation into Jurek Walter (Graham), a man suspected of taking more than a half dozen lives and kidnapping two young siblings. asserted
Nocturne → base → siblings
Though he’s locked away in a concrete cell in the Restricted Housing Unit of Riverside Psychiatric Hospital, Jurek still spends the season pulling strings and sending shivers up spines. asserted
Jurek → lock → spines
In an interview with DECIDER, Graham said the demanding role, which shows his remarkable range, required serious transformation and prep — from physical training and voice coaching to studying psychopathy, sociopathy, and even watching crime documentaries with his wife. asserted
which → say → wife
“A lot of it, at the very beginning, once I’d read the script and I had an idea of where I might go, it was the physical aspect that I wanted to create,” Graham explained over Zoom ahead of Nocturne‘s October 30 premiere. uncertain
Graham → read → premiere
“I wanted to try and create a man who was menacing in a way, but who had the capability of killing you with his bare hands. asserted
who → want → hands
So I worked a lot with my trainer back home, Rob. asserted
I → work → trainer
And we got into quite good shape. asserted
we → get → shape
For a 53-year-old, I was happy with where we got to. asserted
we → get → where
I like to work externally and then bring it into the internal. asserted
I → like → internal
Jurek’s brawny physique was a key change from the novels, which described Graham’s character as an emaciated man in his 60s. asserted
which → describe → 60s
As viewers quickly learn, however, Jurek doesn’t rely on physical strength to subdue others. asserted
Jurek → learn → others
By pinpointing and preying upon personal weaknesses, the master manipulator uses psychological warfare to sneakily wrap people around his fingertips — the same ones he’s doing pull-ups from the first time his caring new nurse, Karl (Rory Culkin), encounters him. asserted
nurse → pinpoint → him
“[Jurek] picks up on people’s vulnerabilities, and he can read people really well,” Graham explained. asserted
Graham → pick → people
“He notices that in the outside world, Karl is kind of invisible, so for the first time, he’s going to make Karl feel seen and be present.” asserted
Karl → notice → time
One way Graham wanted to show Jurek’s manipulation at play was by developing different, downright chilling voices for the character. asserted
Graham → want → character
“I had an amazing voice coach, Susanne [Sulby], who was just wonderful. asserted
who → have → coach
And I had these ideas of wanting to find two different types of voices for this man. asserted
I → have → man
The true him, and then this kind of illusion that he plays, this chameleon character that he can be to charm and get the things that he wants, and to be able to manipulate Karl in particular asserted
he → play → Karl
,” Graham revealed. asserted
Graham → reveal → ?
As noted in Decider’s full Nocturne review, Culkin perfectly portrays a soft, tenderhearted soul at war with himself over his proclivity to see Jurek as more man than monster. asserted
Culkin → note → monster
In brief chats through a wired window and small door hatches, the two develop one of Nocturne’s most curious, compelling dynamics, with Graham and Culkin’s palpable chemistry fueling an unexpectedly intimate connection. asserted
chemistry → develop → connection
When approaching the psychological aspects of their relationship, Graham told DECIDER that he and his co-star intentionally played into the palpable tension between them. asserted
he → approach → them
“We played with that ambiguous sexuality a little bit, which is real fun to do,” Graham said, praising his scene partner and the “wonderful” collaborative process. asserted
Graham → play → partner
“Rory’s such a wonderful actor. asserted
Rory → ’ → ?
You get in there and just play. asserted
You → get → ?
Each one for every single [two-episode] block that we did was fantastic. asserted
we → do → that
And they were always looking, which I found really interesting, for new ways to develop our relationship,” Graham recalled. asserted
Graham → look → relationship
“It was great, because every time we’d finish a block, a new director would come with, ‘Oh, look…I was thinking about this as well.’ asserted
I → finish → this
We like that. asserted
We → like → that
Let’s go down that road for a little bit.’ asserted
’s → let → bit
It was a joy to play.” asserted
It → play → ?
Crafting Jurek’s intricacies and physicality — everything from his eerie chuckle and meditative presence to calculating mannerisms, subtle smiles, and withering stares — was a lengthy, thorough process. asserted
Crafting → craft → mannerisms
But the hard work paid off in a gripping character adaptation and a truly stellar performance from Graham that only grows more intense. asserted
that → pay → Graham
New episodes of Nocturne premiere Fridays on Apple TV. asserted
episodes → premiere → TV
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