As Catholics, we believe in a God of miracles, of mercy, and of grace. Remembering that the chief of all sinners was the greatest instrument for converting the world (St. Paul) there is no one beyond redemption. A person who committed heinous crimes of any sort still has the possibility of becoming a saint.
Considering some of what was said above, I know some will wonder if I say this because I am also a pedophile, like the speculation that a priests who preaches redemption must have something to have. Do not forget that Jesus said the worst sinners he knew would be in Heaven ahead of religious of His time. Without the recognition of one’s own sin, not that of others, there can be no forgiveness of sin.
Redemption, miraculous redemption, is God’s specialty.
“But he said to me, “My grace is sufficient for you, for my power is made perfect in weakness.” Therefore I will boast all the more gladly about my weaknesses, so that Christ’s power may rest on me. That is why, for Christ’s sake, I delight in weaknesses, in insults, in hardships, in persecutions, in difficulties. For when I am weak, then I am strong.” St. Paul
A Christianity that only works when it is easy is rather worthless. These hard case are where we find God at his greatest.
None of this has anything to do with the consequences of sin, or of criminal behavior. All we do has consequences, some of which will continue this side of Heaven. No pedophile ever needs to be put back in a place of easy access to children. That is an entirely separate issue.