What bad habits did Aksionov have before his marriage?
Aksionov used to drink a lot, was riotous, and was involved in illegal activities before his marriage
"Well, old man," repeated the Governor, "tell me the truth: who has been digging under the wall?"
1) That old man is Aksionov.
2) The speaker is asking about the truth of digging an escape hole .
3) The speaker means the prison's wall.