“Their journey so far had been uneventful…”

Note: This post is the twenty-ninth installment in my author’s commentary for Eternal Empire, covering Chapter 28. You can read the previous installments here.

In evolutionary theory, there’s a concept known as exaptation, in which a trait that evolved because it met a particular need turns out to be just as useful for something else. Feathers, for instance, originally provided a means of regulating body temperature, but they ended up being crucial in the development of flight, and in other cases, a trait that played a secondary or supporting role to another adaptation becomes important enough to serve an unrelated purpose of its own. We see much the same process at work in genre fiction, which is subject to selective pressures from authors, editors, and especially readers. The genres we see today, like suspense or romance, might seem inevitable, but their conventions are really just a set of the recipes or tricks that worked. Such innovations are rarely introduced as a conscious attempt to define a new category of fiction, but as solutions to the problems that a specific narrative presents. The elements we see in Jane Eyre—the isolated house, the orphaned heroine, the employer with a mysterious past—arose from Charlotte Brontë’s confrontation with that particular story, but they worked so well that they were appropriated by a cohort of other writers, working in the now defunct genre of the gothic romance. And I suspect that Brontë would be as surprised as anyone by the uses to which her ideas have been put.

It’s rare for a genre to emerge, as gothic romance did, from a single book; more often, it’s the result of small shifts in a wide range of titles, with each book accidentally providing a useful tool that is picked up and used by others. Repeat the process for a generation or two, and you end up with a set of conventions to which later writers will repeatedly return. And as with other forms of natural selection, a secondary adaptation, introduced to enable something else, can evolve to take over the whole genre. The figure of the detective or private eye is a good example. When you look at the earliest works of mystery fiction we have, from Bleak House to The Moonstone, you often find that the detective plays a minor role: he pops up toward the middle of the story, he nudges the plot along when necessary, and he defers whenever possible to the other characters. Even in A Study in Scarlet, Holmes is only one character among many, and the book drops him entirely in favor of a long flashback about the Mormons. Ultimately, though, the detective—whose initial role was purely functional—evolved to become the central attraction, with the romantic leads who were the focus of attention in Dickens or Collins reduced to the interchangeable supporting players of an Agatha Christie novel. The detective was originally just a way of feathering the story; in the end, he was what allowed the genre to take flight.

You see something similar in suspense’s obsession with modes of transportation. One of the first great attractions of escapist spy fiction lay in the range of locations it presented: it allowed readers to vicariously travel to various exotic locales. (This hasn’t changed, either: the latest Mission: Impossible movie takes us to Belarus, Cuba, Virginia, Paris, Vienna, Casablanca, and London.) The planes, trains, and automobiles that fill such novels were meant simply to get the characters from place to place. Over time, though, they became set pieces in their own right. I’ve noted elsewhere that what we call an airport novel was literally a story set largely in airports, as characters flew from one exciting setting to another, and you could compile an entire anthology of thriller scenes set on trains or planes. At first, they were little more than connective tissue—you had to show the characters going from point A to point B, and the story couldn’t always cut straight from Lisbon to Marrakesh—but these interstitial scenes ultimately evolved into a point of interest in themselves. They also play a useful structural role. Every narrative requires a few pauses or transitions to gather itself between plot points, and staging such scenes on an interesting form of transport makes it seem as if the story is advancing, even if it’s taking a breather.

In Eternal Empire, for instance, there’s an entire chapter focusing on Ilya and his minder Bogdan as they take the Cassiopeia railway from Paris to Munich. There’s no particular reason it needs to exist at all, and although it contains some meaningful tidbits of backstory, I could have introduced this material in any number of other ways. But I wanted to write a train scene, in part as an homage to the genre, in part because it seemed unrealistic to leave Ilya’s fugitive journey undescribed, and in part because it gave me the setting I needed. There’s a hint of subterfuge, with my two travelers moving from one train station to another under false passports, and a complication in the fact that neither can bring a gun onboard, leaving them both unarmed. Really, though, it’s a scene about two men sizing each other up, and thrillers have long since learned that a train is the best place for such conversations, which is why characters always seem to be coming and going at railway stations. (In the show Hannibal, Will and Chiyo spend most of an episode on an overnight train to Florence, although they easily could have flown. It ends with Chiyo shoving Will onto the tracks, but I suspect that it’s really there to give them a chance to talk, which wouldn’t play as well on a plane.) Ilya and Bogdan have a lot to talk about. And when they get to their destination, they’ll have even more to say…