Russell Manser can tell you a lot about what goes on in prison. As a convicted bank robber, he spent 23 years in and out of various institutions in Australia, dealing with bullying guards, inmate politics and sexual assault. 
But he can also tell you even more about what happens afterward: about the importance of finding purpose and gratitude, of seeing the good in others and in what rehabilitation really means.
And it's all a must-hear.