Michael de Larrabeiti’s classic children’s trilogy, “The Borribles,” is back in print in an omnibus edition incorporating all three volumes of the story. “Borribles” is not only one of the finest children’s adventure stories ever penned, it’s also an epic love poem to London, in the same way that China Mieville’s King Rat is — dark and glorying in the decadent, intestinal twistings and turnings of London’s sooty, crowded, vibrant streets. I’ve just started re-reading the trilogy, and I’m astonished anew at how good this is.