I am sure he will keep trying every chance he gets.
Assuming he does nothing wrong in jail, one would expect him to be out sometime between the 15-20 year mark (minus the time he has already served)
Given he has no prior criminal history (except being a real estate agent
![Smile :) :)](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
), one would assume after sitting in jail for 15+ years you would never do it again.
Doesn't mean he shouldn't be doing the full time for his crime.
Admission of the act and remorse to Alison's family and his kids would be the first step before any thought of parole should be considered.