Who does jurgis run into in jail? What does this person get jurgis into?

Jurgis runs into Jack Duane, who tells him to find him once he gets out of prison. Jack tells Jurgis that he wants to make him a part of his crime operation ,and Jurgis is grateful for the chance.

Source(s): http://www.gradesaver.com/the-jungle/study-guide/section9/