escaped prisoner

They found it in this purely unofficial communication from an escaped prisoner of war.

Belfort suddenly caught sight of a fugitive form, fired a shot at it, and gave chase, shouting that it was the escaped prisoner.

As we came along we met a gang of persons, hunting, they told us, for an escaped prisoner.

If he has lied, and is the escaped prisoner, I will see that he is returned to the prison.

An escaped prisoner who could find out was, therefore, likely to be treated as a spy.