What if you only have one day to figure out who you really are? After discovering her father's mysterious collection, Sabrina suddenly realizes that everything she knew about him was a lie. The person close to whom she grew up suddenly turned out to be a stranger. She had a free day - an unexpected respite from the dull series of her everyday life - to penetrate into her father's secret life. A whole day of memories, stories and people she didn't even know existed. One day that will forever change Sabrina herself and the world familiar to her. “A Game of Marbles” is a novel about how our most ordinary decisions sometimes lead to incredible consequences, about how only by understanding someone else, we truly understand ourselves.