My first (and somewhat belated) exposure to M. John Harrison came with a short story called Tourism about a character called Jack Serotonin going into a site with a woman and only Jack coming back. The story focussed on what happened to the people on the outside of the site as they waited for Jack to come back. The short story was a precursor, a taster to this novel, with a name or two changed and the plot of the first chapter mapping onto that story with a few shifts. What follows is an investigation into an outlandish world described like a detective novel. Which is fitting, as the best detective novels have a good sense of place, and Nova Swing's downbeat, downmarket setting is a very memorable world.
In a sense, the plot is secondary. The story is about the characters who inhabit this world and how they interact with it. However, I will say that the fact that Harrison includes a quote from Roadside Picnic by the Strugatskys is very telling. Had he not acknowledged this as an influence (along with a small allusion - I think - to Philip K. Dick's Clans of the Alphane Moons), I might have been a little saddened. However this story is an inversion of that one because it's about what takes place outside the site where strange things happen. It's about how society is filled these days with tourists, people who will never know what it is to be lost, how society has become so safe that it's sometimes hard to see why we keep living. Serotonin is one of the few men in this world who thrives on being lost, both inside the site and in his own life.
As ever with Harrison, there is sex, there is body horror, there is profundity. And isn't that what British SF is all about?