Upcoming Book to Film: Trash, by Andy Mulligan.

I really should get around to reading this one, but for whatever reason, I'm a tiny bit scared of it.

From Deadline:

Martin Sheen and Rooney Mara are set for the Stephen Daldry-directed film that Richard Curtis adapted from Andy Mulligan’s 2010 novel. Sheen will play Father Juilliard, and Mara will play Olivia, an NGO worker, in the tale of three poverty-stricken boys (played by newcomers Rickson Tevez, Eduardo Luis and Gabriel Weinstein) who discover something unusual, mysterious and dangerous in a city dump in the Third World-set story.

Have you read it? Is it hideously depressing?