"Because we bring him news of his lost son."

What if he turned out not to be Letis' lost son?

The professor reflects on the disaster, writing letters in his head to a lost son.

In the vulnerability of sleep, the elder Jack looked almost like his lost son.

This was not only vengeance for a lost son, but an invasion.

The general adopts him in place of his long lost son.

In their eyes we'll be like a long lost son returning home.

Now, at last, they can grieve properly for their lost son.

She was holding her lost son, and the other one would improve.

Is it possible that from this rest she will rise to hear of her lost son?