Jesperson became widely known as the “Happy Face Killer” due to drawings of smiley faces he added to letters sent to media and the police. He was arrested in 1995. AP.

The 'Happy Face Killer' has claimed he has been 'cured' by his time behind bars, and says he'll never commit another crime again.. Keith Jesperson, 67, from British Columbia, Canada, killed at ...

Nirvana has been in court for years over the famous drawing – a yellow smiley face with X’d-out eyes that first appeared during promotion for 1991’s Nevermind.