To sell his house, he takes his father to a nursing home and, when he comes back for more, this happens.

Big Dreams In A Little Suitcase

While the suitcase was relatively small, who knew how large its contents could have been. The husband started wondering what could possibly be inside. The fact that the suitcase was hidden so carefully and expertly just showed that whatever was inside must have been valuable – at least to the owners. However, if the contents of the suitcase were valuable, how come they had forgotten it behind?

Big Dreams In A Little Suitcase