But what he had understood was who he could use to make a new library of memories that would bring him joy and light. For a long time, he had brooded, wondering how he could make his torturers pay. What had finally illuminated the road to his release was the terrible humiliation he’d suffered at the hands of that bitch of a Hungarian whore. It wasn’t the first time he’d been taunted, but it was the first time someone had sounded just like his grandfather. A dizzying blackness had engulfed him, blocking out everything except an insatiable rage. In an instant, he’d had his hands round her throat, so tight her face had turned purple, her tongue poking out like a gargoyle. But in that moment when he had literally held her life in his hands, he’d suddenly realized it wasn’t her he wanted to kill.

He’d fallen away from her, gasping and sweating, but simultaneously clear-headed, his feet set on a new path. He’d staggered into the night, an altered man. Now, he had a mission.

His pleasure in the remembrance of things past was broken by the arrival of Manfred with a steaming mug of coffee. He didn’t begrudge the interruption, however. It was time something brought him back to earth. He’d been steering all morning on automatic pilot, which wasn’t good enough for the stretch of river that lay ahead. The congested waters of Rotterdam were a deathtrap for the inattentive skipper. As the Nieuwe Maas swept through its wide bends towards the various side channels leading to wharves and moorings, tugs and barges and launches were constantly on the move. They could shoot out insouciantly from blind corners at outrageous speed. Avoiding collisions required all his attention to the radar screen as well as to the waters around him. Up in the bows, Gunther scanned the waterway, a second pair of eyes for what lay ahead, where the skipper’s view was often obscured.

For now, he had to concentrate on getting them to safe harbour. The boat was all that mattered, for without the boat he was nothing; his mission would be scuppered. Besides, he was proud of his skills as a Rhine skipper. He had no intention of becoming the butt of dockside laughter.

Later, there would be plenty of time to indulge himself, to let the darkness fold back and bask in the light. While they were unloading, he could return to his memories. And perhaps plan how he would add to his store.