Bob Moore: No Hero - Tom Andry
http://www.smashwords.com/books/view/36483
"Super powered humans started appearing 30 years ago. Now, they are everywhere. Bob Moore, Private Eye, dares to investigate those who could incinerate him with a thought. When he is called to help a super from his past, however, he'll be pushed to his limit. When supers and the police think there is no crime, can he get to the truth? Will he want to for the man that destroyed his marriage?"
Even an Australian author. Rather enjoyed this.