Love, from 1971, is a very short novel (about 40,000 words), on the face of it pretty mundane. It's the story of a doomed love triangle (of sorts) in London in the 60s. The setting is nominally ordinary, there are no explicit fantastic elements. But the telling is decidedly weird, heightened, so that it has a fantastical feel. Which is only increased by the strangeness of the characters.
Lee Collins is a young schoolteacher. His wife, Annabel, is something of an artist. His half-brother, Buzz, is a bit of a lowlife. All ordinary enough. But we soon learn the back story. Lee's father died when he was an infants, and his mother became a prostitute, then bearing Buzz to an American soldier (who Buzz thinks was an Indian). Their mother went insane when Lee was 11 or so, and their radical aunt adopted them, among other things giving Lee his new name (actually Leon, after Trotsky). After the aunt's death Lee struggled through university while Buzz drifted. Lee ran into Annabel at a party. She was an upper middle class girl who had just tried suicide, and somehow Lee ended up taking her home, where she just sort of stayed. He begins sleeping with her a few weeks later (without her seeming to care much one way or the other), and sometime later they are more or less forced into marriage when her parents discover them.
Buzz eventually shows up and moves in himself, and he and Annabel form a strange alliance, mostly against Lee. Lee ends up in an affair, driving Annabel once again to attempt suicide. Lee kicks Buzz out and brings Annabel home again, but it is not long before another crisis drives Annabel once again to a suicide attempt.
It's all extremely weird, mostly because all the characters are just plain nuts. I remained interested, but not really involved, basically because I didn't believe in any of these people. It's not that they weren't self-consistent, but they just didn't seem real. Still, very strange, quite original.
The edition I read included an afterword in which Carter described her characters' later lives. It's mostly satirical in tone, and I thought it quite ill-judged, actually, a mistake.