What is the difference between friendship and love? Or between neutrality and commitment? Gustav Perle grows up in a small town in ‘neutral’ Switzerland, where the horrors of the Second World War seem a distant echo. But Gustav’s father has mysteriously died, and his adored mother Emilie is strangely cold and indifferent to him. Gustav’s childhood is spent in lonely isolation, his only toy a tin train with painted passengers staring blankly from the carriage windows.

As time goes on, an intense friendship with a boy of his own age, Anton Zwiebel, begins to define Gustav’s life. Jewish and mercurial, a talented pianist tortured by nerves when he has to play in public, Anton fails to understand how deeply and irrevocably his life and Gustav’s are entwined.

Rose Tremain’s bestselling novels have been published in thirty countries and have won many awards, including the Orange Prize for Fiction (The Road Home), the Whitbread Novel Award (Music & Silence) and the James Tait Black Memorial Prize (Sacred Country); Restoration was shortlisted for the Booker Prize. Rose Tremain was made a CBE in 2007 and was appointed Chancellor of the University of East Anglia in 2013. She lives in Norfolk and London with the biographer, Richard Holmes.