. >> now, dale falkner is trying again to rehabilitate himself, starting with a letter to his rape victimive anything to be able to turn back time and remove the harm that i caused in your life. the things that happened the night that i met you were completely my fault. if there is anything that you have felt bad about on your part, please let it go. it was totally on me. >> i think a lot of the guys here have been able to see a way of changing their lifestyles. i have hope one day that they'll get back outside. >> 40% of the criminals who enter state prison in america are former inmates who have violated their parole. meanwhile this statistic may raise doubts as to the effectiveness of rehabilitation behind bars, officials at holman maintain that rehab programs not only improve inmate behavior, they help reduce violence inside the institution. that's our report. thanks for watching. i'm john seigenthaler >>> due to mature subject matter, viewer discretion is advised. >>> it's a grinding wheel. everything here is a rut. it's a circle. it's a death trap. >> it's like a tomb. a concrete tom