Although it wasn't a disturbing book on the whole, there was one incident in Apples by Richard Milward that I found absolutely chilling, in that no reference was made to it afterwards whatsoever, even though it was an unimaginably horrible thing to consider happening in real life. My only thought is that the author is quite young and so probably was trying to write to shock for the sake of it, or just thought it was funny. Has anyone read it and do they know which bit I'm talking about? (Don't want to give spoilers)