The black BMW skidded sharply and jolted Doctor Anna Nowak out of her reverie. She struggled to regain control of the car and only just managed to do so. Her heart was pounding. She slapped herself on the cheek. ‘Idiota,’ she said to herself. She slowed the car, reached into her handbag on the passenger seat and took out a can of Red Bull. She clicked it open with one hand and downed it in one. Anna knew that she was taking a risk by driving so fast. The Polish county roads, never in a great condition at the best of times, were icy and she was exhausted. She was struggling against the urge to sink into the dark womb of sleep. She"d been working non- stop shifts at The Maudsley Hospital in London for days and had just flown back to Poland the night before. She’d been up for hours. But s