Jenna's Law, named for 22 year old Jenna Greishaber of New York, ended parole for all violent felons.  It requires all violent felons to serve at least six-sevenths of their prison sentences.  It mandates sentences with set lengths.  It also subjects violent felons to post-release supervision of anywhere from 3-5 years or life for sex offenders. Jenna was a nursing student who was stabbed and bludgeoned to death in her Albany apartment.  Her killer, was a repeat, violent felon who recently had been paroled for the third time.