Jack Unterweger was Austria’s most notorious serial killer who while serving prison time for his first murder, wrote poetry, a novel, and an autobiography. He received success and celebrity from his writing and was eventually given parole in 1990. On release, he was championed by the literati as the archetypal proof of reform. Unfortunately, it didn’t prevent him from continuing his killing spree. He’d continued killing for two years when a retired detective from the original case recognized the modus operandi and linked them to his latest murder, eventually putting Unterweger back in prison.