Mortal Engines

On paper, Mortal Engines seems like a can’t-miss film. It’s an adaptation of the well-received Young Adult novel of the same name by Philip Reeve, comes from a screenplay by the writing team behind the epic The Hobbit and Lord of the Rings trilogies, including Peter Jackson, and included a trailer with striking visuals. But with mostly weak reviews, scoring a meager 26% on Rotten Tomatoes (audiences were slightly more kind with a 56% rating), and a paltry $16 million box office take in the US and Canada, this Engine was perhaps a little too Mortal.


But I’m not one to let a bad review dictate what I’ll watch, and my faith in Peter Jackson was enough to have me eager to give this a view at home. As is often the case recently, ME was released on digital download a full three weeks before the disc version, so I downloaded the film from the Kaleidescape store in 4K HDR.


There are, of course, three ways to approach a movie based on a popular book: Read it before, read it after, or don’t read it at all. With The Hunger Games trilogy, I devoured the books prior to watching the movies, and this built a lot of anticipation for the films, which didn’t disappoint, IMO. With Ready Player One, I was inspired to read the book after watching, and felt that while the two works were markedly different in many respects, they both worked for their medium. My wife started reading ME but the story didn’t grab her, so I went into the film knowing very little.


The 128-minute movie starts off with just a bit of exposition to explain how mankind arrived at its current state. Some untold number of years ago—enough for people in our time period to be referred to as “the ancients”—a 60-minute war involving a Quantum energy weapon known as MEDUSA effectively destroyed most of the world, bringing humanity to the edge of extinction. Out of the toxic remnants, a new age arose—the age of the great predator cities of the west. Of these cities, one of the largest is London, which roams around the Great Hunting Grounds of continental Europe practicing a philosophy known as “Municipal Darwinism,” where large cities on immense treads hunt down, ingest, and dismantle smaller cities for food, fuel, and any salvaged technology that can be repurposed.


Within the first 10 minutes you’re introduced to the main players which include Hester Shaw (Hera Hilmar), who is out to avenge her mother’s killer; Tom Natsworthy (Robert Sheehan of recent The Umbrella Academy fame), a historian who gets (literally) kicked off the London and is forced to bond with Hester to survive; and Thaddeus Valentine (Hugo Weaving from The Matrix and the Hobbit and Rings trilogies), London’s power-hungry head science engineer who is searching for old-tech in order to secure a new power source for London’s future and oppose the anti-traction league, a group of static cities that sit protected behind a giant shield wall.

Mortal Engines

The film’s opening scene is action packed, as the enormous London chases, captures, and ingests a smaller city. The film has massive scope, scale, and world building, with convincing CGI that shows how something on the scale of London-on-tracks would function from a technical level, and makes it appear these giant tracked cities are actually driving around. I’m not sure to what extent the sets were of practical design versus created inside a computer with CGI, but the visuals are impressive, presenting these immense mobile locations that drive around carving out huge ruts in the land with their enormous tracks. Some of my favorite parts of the film were just admiring the inner-working and design of London.


The film was shot in Redcode RAW at 8K and the home release is taken from a 4K Digital Intermediate and looks terrific.The film is a feast for the eyes, and items have terrific texture and detail. Whether it is the fabric in actors’ clothing, the various states of disrepair on walls and items around the very Steampunk-inspired London, or the multiple bits of machinery, ME offers tons of detail in every frame. There are several closeups where you can see the individual strands of hair on an actor’s head.


The film spends almost equal parts in dark and light environments, and HDR is used to good effect throughout to produce images that pop with detail. London at night, various searchlights piercing the darkness, and various lights and gauges inside cockpits all retain deep, rich black with appropriately bright highlights. The fires inside London’s engine room also particularly benefit from the HDR color grading.


Sonically, ME is the stuff home theater owners live for. The bass is big and weighty, carrying the proper amount of heft for something the size of London driving around and smashing into things. There are also a lot of textural sounds—engines thrumming, gears turning, cables moving—giving life to scenes. Sound effects have tons of directionality, putting the full soundstage to use to create an immersive experience. Dialogue also remains clear and intelligible throughout, even in the big action pieces, something some recent films have been missing.


My only complaint with the audio is that the Kaleidescape digital download didn’t include the Dolby Atmos soundtrack, instead having a 5.1-channel DTS-HD mix. For a movie with such a dynamic and textured soundtrack, I’d love to hear how this sounded in a full Atmos mix. Of course, the blame here lies with NBC Universal, which for some reason refuses to provide Kaleidescape with the immersive audio mix for any of its films in 4K HDR. Here’s hoping that gets resolved at some point in the near future, at which point anyone who has already purchased the film would be able to re-download it with the new audio track at no charge.


While not perfect, and a bit light on plot, I found Mortal Engines engaging and entertaining, and it definitely looks and sounds fantastic on a proper system. 

John Sciacca

Mortal Engines

Probably the most experienced writer on custom installation in the industry, John Sciacca is
co-owner of Custom Theater & Audio in Murrells Inlet, South Carolina, & is known for his writing
for such publications as
 Residential Systems and Sound & Vision. Follow him on Twitter at

@SciaccaTweets and at

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