When Enterprise
set up the idea of the Delphic Expanse, teasing us with the strange things that might happen there, they hit the audience with two specific "ghost stories" to sell the spookiness of the place: that the crew of one ship was turned inside out, and that an entire Vulcan crew was driven insane. Being a network show, they were never going to follow up and show us more about that first idea. But the second one takes center stage in "Impulse."
The Enterprise encounters a dense asteroid field, full of an element that can be used to protect the ship from the hazards of the Expanse. But as the crew makes plans to mine it, they discover a Vulcan ship adrift deep inside the field. When a team boards the ship, they find the entire crew compromised by an affliction that has turned them into rage-fueled monsters... a condition which begins to affect T'Pol.
"Impulse" is a straight-up horror episode, featuring Vulcan zombies. Boiled down that simply, it sounds pretty hokey -- though it's actually better than that, thanks in large part to the series' consistently high production values. Veteran Star Trek director David Livingston really leans into the stylistic shift, working with the production team to establish moody lighting, over-exposed film, arch camera angles, lots of fog, and superb makeup to give us a zombie story that legitimately honors the genre.
I do find myself wishing that there had been something a little more distinct about the fact that these are Vulcan zombies, some kind of Star Trek spin on the classic trope. (We don't even get that they're strong zombies, as they should be compared to the humans.) It's possible that what I'm really feeling is fatigue over the parade of zombie television in the decades since this episode was made. But if all this episode is going to do is "play the hits," it at least does so well -- zombies staggering inexorably toward the camera, clawing as people escape up a ladder, protruding through a barely-opened door... and all set against the ticking clock of an "infected" person slowly being turned. The episode even ends with "one last jump scare" as T'Pol has a nightmare about what she's been through.
But a huge measure of the tension is undercut by the "24 hours earlier" trope tacked on at the beginning of the episode. "Impulse" doesn't begin with the creeping dread of finding the Vulcan ship drifting in the asteroids; it begins with T'Pol already succumbing to zombie-ism, teasing us with the threat that she might die screaming on Phlox's Sickbay bed. (Jolene Blalock acts her ass off, full-on screaming into the camera... before we awkwardly smash cut to "it's been a long roooooad.....")
We know T'Pol isn't going to die here. But the show's insistence on teasing us with this schmuck bait compromises so many other aspects of the episode. We don't know the "zombie rules" going into this situation, but by showing us that teaser, we've been told that only T'Pol is at risk of "being turned"; we lose any tension that the humans on the mission might be threatened by "zombie bite." We've also seen exactly how bad T'Pol is going to get before arriving in Sickbay, which ultimately deflates any tension over how long the team might be trapped aboard the Vulcan ship. I'm hard-pressed to think of any horror movie that uses a flashback structure, and I'm pretty sure this is why: it just undercuts everything the genre is trying to do.
At this point, it's become comical how much this series hates several of its own characters. Travis Mayweather is involved (barely) in the B-plot about mining ore from an asteroid, but there's no possible justification for why he -- their best pilot -- didn't fly the shuttle to the Vulcan ship. (We just can't have him getting anywhere near the A-plot.) And just when you think nothing more can be said or shown about Reed's ineptitude as a tactical officer: Archer saves his life in a hand-to-hand fight with a zombie, and then later messes up "hotwiring" a console on the Vulcan ship, locking them out and angering T'Pol.
While I praised the horror-specific aspects of the production, I should still highlight that this episode is also good in many of the ways the series typically excels. We get the visuals of a super-dense and dangerous-looking asteroid field, a transporter accident that fuses rocks into the walls and floor, a shuttle crash on an asteroid, lingering shuttle damage, and a huge ship explosion. There's also multiple solid action sequences that involve fist fights, shoot-outs, crawling and climbing, and scurrying across a narrow beam over a chasm. Once again, this show does action well -- even if that unfortunate "24 hours earlier" tease has deflated much of the tension from it.
Other observations:
- This episode is something of an inversion of the earlier "Strange New World." There, an "infection" turned the humans against T'Pol; here, one turns T'Pol against the humans.
- For the larger Xindi story arc, we learn that the very ore which can protect the ship from the anomalies of the Expanse is toxic to Vulcans. T'Pol says Archer should leave her behind and protect the ship, but Archer says he can't save humanity by losing what makes him human. That would have been a better line if the Xindi arc hadn't taken Archer as far down the "Jack Bauer road" as it already has.
- As much as I hate the use of the "24 hours earlier" trope, they at least have the good sense not to repeat the same scenes when the flashbacks catch us back up to where the story began.
- On movie night, Phlox once again talks during the film. (I guess the writers aren't willing to count him completely out of the "worst character on Enterprise" contest, despite the stiff competition.) T'Pol once again has a perfectly Vulcan way to shush hum.
I really love how Enterprise went for a horror movie here, and how far the behind-the-scenes team went to realize that vision. I'm disappointed in how much the writers let them down with a poor script structure and a lack of any "Trek-specific" spin on the zombie trope. Overall, I give "Impulse" a B-.