DNA!

When Charles accepted the envelope, many things had been going through his mind, but he was unprepared for the contents. Never in his wildest dreams did he think that the contents would be what they were! His hands shook and became lax. 

The contents spilt out onto the floor as their eyes were drawn to it, studying it. Ky was the first to bend down and pick up some of the spilt pictures. It was of Thalia and another man.

He looked up at his wife and sighed. Ky knew Joy best. He wondered when she had gotten the pictures taken and why she was even carrying it along with her.

Charles closed his eyes tightly as the increasing disappointment he had been feeling for his mother's actions bloomed but was instantly overshadowed by what he felt for his Thalia.