He and your father shared some secret together--some dreadful secret which brought about your father's death.
That is one reason why Thalassa will not speak--because he is implicated in this mystery, whatever it is." "No, no.

He is keeping silence because of me--I feel sure.

I made him promise not to tell." Charles Turold shook his head decidedly.

"He may have more than one reason for keeping silent," he said with a swift flash of intuition.

"If it is as you say, he is shielding himself as well as you.