'There once was a boy who fell in love with a bridge. It was a beautiful bridge ...So begins The Rain Bridge, a story by one of the finest living poets, written for his son, then aged six. It is a tale of loss, kindness and recovery. Sarah Iremonger's illustrations match, in their simplicity, the purity of the author's style. Derek Mahon's book for children has the force and timeless effect of a parable.  OUR LAST COPY