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

The cost of being treacherous

Gavin peered out a window at dawn and looked at the world again with new eyes. He was now aware of the true cost of his act of betrayal. It was not simply the loss of an inheritance or the damage to his fortune; it was the profound realization that a father’s unconditional love and trust had been altered by the quick lure of wealth. He had suffered the true cost.

The cost of being treacherous