They each committed cold-blooded acts of murder that could have put them behind bars for years, maybe decades. However, for three Oregon teenagers, a controversial therapy program offers the promise of rehabilitation -- and early release from prison. If successful, this "second chance" program could help straighten out troubled kids and enable them to become productive members of society. But is the potential threat to society worth the risk? The America Undercover documentary TEEN KILLERS: A SECOND CHANCE? examines all sides of this explosive issue when it debuts TUESDAY, NOV. 3 (9:45-10:30 p.m. ET), exclusively on HBO.