Convicted rapist and killer Paul Bernardo has been denied parole He told a parole hearing that he cries over his crimes, and argued that he has improved himself after 25 years in prison Bernardo is one of Canada's most notorious criminals He was convicted in 1995 of the murders of teens Leslie Mahaffy and Kristen French His then-wife Karla Homolka served 12 years until 2005 after pleading guilty to manslaughter