Star Trek: Strange New Worlds Season 4, Episode 4 Review: “A Case of Chiaroscuro” Proves This Show Can Do Anything

This Strange New Worlds Season 4 Episode 4 review has a lot to unpack, because four episodes in, the show has already given us dinosaurs, time travel, and Martians in the premiere, a genuinely unsettling horror outing in “The Griffin Incident,” a laugh-out-loud comedy in “Human Best Friend,” and now — a black-and-white film noir. On paper, that’s the kind of genre-hopping that should leave a show feeling scattered. In practice, “A Case of Chiaroscuro” is more proof that this creative team knows exactly what it’s doing, because underneath all that tonal whiplash, the characters keep moving in a straight, deliberate line.

Full Noir, No Half-Measures

The premise is classic Trek in its cleverness, and it’s the first thing worth flagging in any Strange New Worlds Season 4 Episode 4 review: the Enterprise is sent to retrieve a wayward probe that’s drifted into Klingon-occupied space, into a system where a star’s radiation strips the color out of everything the crew sees. Rather than treat that as a throwaway visual gag, the show commits completely — shooting the entire episode in black and white, with Una leading her first away mission since her promotion, alongside M’Benga and Uhura, into something that plays like Casablanca while also doing its own thing. It’s a bold structural choice, and it earns its title — “chiaroscuro” being the art term for the interplay of light and shadow, which doubles as the episode’s whole thesis about morally gray choices. It’s exactly the kind of swing that makes this Strange New Worlds Season 4 Episode 4 review worth writing in the first place.

Ortegas and Scotty: From Rivals to the Ship’s Best Comic Relief

The throughline I most wanted to see pay off did. Ortegas and Scotty spend this episode as the Enterprise’s newest odd couple, having gone from publicly loathing each other to genuine friends by the end of last week’s episode. Here, that bond gets put to use: with sensors scrambled by the same radiation washing out everyone’s vision, Scotty rigs a workaround by manipulating the probe signal to help track the Klingon battle cruiser holding their away team’s fate in the balance. It’s low-stakes on the page but high-charm on screen — the two of them bonding over Cuban sandwiches while La’an, ever suspicious, tries to figure out why they’re suddenly inseparable. It’s a smart bit of writing: pair your most volatile helmsman with your most earnest engineer, and let comedy do what exposition can’t. If nothing else, this Strange New Worlds Season 4 Episode 4 review has to give the writers credit for finding room for a laugh even inside a noir plot this tense.

The Arcs Underneath the Genre Costume

This is really the point worth making about season 4 so far, and the reason this Strange New Worlds Season 4 Episode 4 review keeps circling back to character: the genre is just the wrapper. The character work inside it hasn’t wavered.

• Ortegas keeps softening, episode over episode. The woman who spent season 3 white-knuckling her way through PTSD is now the one cracking jokes over lunch with a former antagonist. That’s not a coincidence; it’s a season-long de-escalation, and this episode is the clearest evidence yet that it’s working.
• La’an, meanwhile, is fraying at the edges. Her Romulan augmentation keeps making her sharper and more paranoid at the same time, and it’s straining things with Spock — who dismisses her instincts as paranoia here, only for her to be at least partly vindicated. Their dynamic has become one of the season’s quieter tensions worth watching.
• Spock is still the show’s emotional tuning fork, caught this week between logic and La’an’s instincts, another small skirmish in his ongoing war between his human and Vulcan halves.
• Uhura gets the episode’s heaviest lift, enduring a brutal interrogation that tests her resolve in a way we haven’t seen from the character before — and it’s another rung on the ladder toward the self-possessed officer we know she becomes.
• Pike, even in a episode not centered on him, still carries Marie’s loss in the margins — it’s become part of the show’s emotional wallpaper rather than a single-episode subplot, which is its own kind of achievement.

Strange New Worlds Season 4 Episode 4 Review: Final Verdict

“A Case of Chiaroscuro” isn’t going to unseat “Those Old Scientists” as the show’s genre-bending high point, but it doesn’t need to. What it proves is that Strange New Worlds can wear any costume it wants — horror, comedy, noir, whatever’s next — because the people underneath the costume are who you’re actually watching. Four episodes in, that’s shaping up to be season 4’s real achievement, and it’s why this Strange New Worlds Season 4 Episode 4 review lands solidly positive despite the show taking such a big genre swing.

Rating: 8/10

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