He recognized the box as his son's and he dropped it into his pocket.

At another time perhaps he would have walked over and handed it back; but not then.

The two were not speaking to each other.

Later, at the time of the struggle in the cave, the box fell from the old man's pocket, and formed a most damaging piece of circumstantial evidence against his son.
"On the whole," Terry finished, "I do not think we shall have a very difficult time in clearing Radnor.

I had arrived at my own conclusions concerning him from reading the papers; what extra data I needed, I managed to glean from Solomon's lies.