On an overnight train to Innsbruck, ex-lovers Richard and Frances meet by chance – four years after their mysterious separation on a train journey through the vast expanses of the Sudanese desert. They tell their separate stories of fear, confusion and loss, trying to unravel the truth of what happened – and confronting the bitter possibility that one of them may be lying.

As their train hurtles through a long sleepless night, a third passenger eavesdrops on their conversation, mesmerized by a complex dialogue that probes into the very nature of truth and personal identity. A story of love and doubt, Overnight to Innsbruck, is charged throughout with tantalizing puzzles and has all the tension of a first-class psychological thriller.