When concert violinist Milan begins ro hear musical tapping sounds that seem to be coming from somewhere inside him, he thinks that he may be losing his mind. But a scan at the hospital reveals the alarming truth: since birth Milan's body has been harbouring his twin sister ? a rare medical occurrence that will turn his world upside down (or inside out). At the centre of a whirlwind of media hype, Milan embarks on the most intimate and unexpected relationship of his life. His new found sibling Roma believes there are only 147 people in the world. She has never seen the moon, never tasted her favourite wine. And as Milan attempts to introduce her to the world outside, he discovers for himself just how strange it really is. AUTHOR: Billy Cowie is a Scottish composer, choreographer, artist and filmmaker. He has composed music for a number of BBC Radio 3 projects including Philip Pullman's His Dark Materials trilogy. Billy is currently Principal Research Fellow at the University of Brighton. SELLING POINTS: A new writer whose deceptively quiet style and subtlety will appeal to fans of Mark Haddon and Dan Rhodes The novel was previously self published and sold well by word of mouth alone A love story with a difference, beautiful and thought-provoking