I thought A Little Life was long - this is a massive tome at over 900 pages. The main difference between the two books is that I loved A Little Life. Sorry, but I can't say the same about City On Fire. It was overlong (it's taken me over a month, perhaps two, to read it), confusing, a bit pretentious (keep a dictionary at hand if, like me, you are an ordinary person with an ordinary person's vocabulary. Not quite as bad as Will Self, but nearly there.) I totally lost the plot (literally) a number of times, I got confused over the characters (mainly the Post Humanist gang - I still don't know who has the tattoos or the green hair).
The main premise of the story is this. It is 1970s New York. A girl is found shot in a park on New Year's Eve. That's the gist. Add into that many characters who are linked to the girl in one way or another, so you are left wondering who may have done it. But i didn't really care - even when the guilty person was revealed there was no gasp from me - nada. We have Regan and Will, son and daughter of a wealthy business man William Hamilton Sweeney, whose name is known all over New York. The snake-like and unlikeable Amory Gould, Regan and Will's step uncle from their father's second marriage to the money grabbing Felicia. Regan's husband Keith, who is having an affair with Sam, the victim in the park. Mercer, Will's black boyfriend, who also found Sam's body. Um, then we have Will's 'friends' from when he was in a short-lived punk band - Nicky Chaos, Sewer Girl, Sol, DT. Then there's the reporter Richard, his neighbour Jenny, Sam's father the firework maker, oh and not forgetting Regan and Keith's children Cate and Will. Yes, there are 3 Wills. When the story goes back and forth in time it gets mildly confusing. Then there's Charlie, who had a crush on Sam, and when he finds out she's been shot becomes Messiah-like. Oh, nearly forgot the crippled detective who has to sort out all the mess - and from what I understood, he didn't really solve it, someone showed him all the clues and led him to it.
There are fireworks, fires, black-outs, business frauds, drugs, anarchists. I've read good reviews and bad reviews - if you have the time to spare, read it yourself and make your own mind up.