I tend to be a sucker for cerebral science fiction as it’s one of the more fascinating slices of the sci-fi genre. It generally comes in all shapes and sizes. It can be a movie as seminal as Stanley Kubrick’s “2001: A Space Odyssey”, as epic as Christopher Nolan’s “Interstellar”, or as contained as Duncan Jones’ “Moon”. It may be something more metaphysical such as Andrei Tarkovsky’s “Solaris” or more psychological like James Gray’s “Ad Astra”.

Director Mikael Håfström goes the cerebral route with “Slingshot”, a science fiction thriller that’s less about pulse-pounding action and more about the psychology of its main character played by a well-cast Casey Affleck. The story comes from screenwriters R. Scott Adams and Nathan Parker who place us with three astronauts aboard a tight-quartered state-of-the-art ship as it journeys across deep space. It’s their interactions and inevitable tensions that propel the movie. But Adams and Parker pepper their story with flashbacks to add some much needed context.

Affleck plays John, one of three men aboard the Odyssey 1. Their mission has them venturing to Saturn’s largest moon Titan. There they hope to tap into its infinite supply of methane in an effort to create a new clean energy alternative to save a dying Earth. But reaching Titan will be a challenge. It will require a dangerous gravity-assisted slingshot around Jupiter, catapulting them towards Saturn.

Joining John is his commander, Captain Franks (Laurence Fishburne) and the team’s engineer, Nash (Tomer Capone). Their long, arduous trip requires 90-day cycles of deep hibernation. In between their three-month sleeps the crew takes time to inspect the ship, confirm their course, get in some exercise, and take psyche evaluations. Then it’s back into their pods for another cycle. But for John, the drugs used to induce hibernation start having side effects. He begins forgetting details from his past. Even more jarring, he occasionally sees visions of Zoe (Emily Beecham), his girlfriend he left behind on Earth.

After yet another cycle, a sudden collision puts a dent in the ship’s hull. The damage sparks a debate on whether to continue the mission or return to Earth. Nash wants to turn around and head home. Franks sees no credible threat to the ship, and with only two more cycles to Jupiter’s orbit, he’s determined to keep going. That leaves John caught in the middle, weighing both positions while masking the psychological toll the mission is taking on him.

Affleck’s performance is tempered to fit a man full of suppressed regret and slowly losing his grip on reality. The 49-year-old has always possessed the ability to keep his feelings bottled up. But he can also convey a quiet intensity that simmers to the point of exploding. Both are key facets and precisely what his character needs. Fishburne is effortlessly rock-solid as usual while Beecham does good with what she’s given, appearing exclusively in flashbacks and giving form to the name and face haunting John.

I’m guessing Håfström worked with a modest budget, but he makes great use of every penny. There are no elaborate set pieces and much like the astronauts, we’re mostly confined to the ship. Yet “Slingshot” is a visually striking movie. Håfström and production designer Barry Chusid conceive a claustrophobic yet believably futuristic ship design with its sterile white interior, bright computer screens, and interesting technology. Meanwhile the flashbacks give us a welcomed reprieve while adding a necessary layer of humanity that comes fully into play during the film’s twist-filled finish. “Slingshot” opens in theaters today.

VERDICT – 4 STARS