Police are flashing the cash in the hope of catching some alleged murderers before time runs out… The first offer is for those who turn in James Dalamangas – he’s suspected of the stabbing death of George Giannopoulos in a Sydney nightclub in 1999. NSW Police believe Dalamangas fled to Greece, where authorities are more than willing to prosecute him – the problem is nobody knows where he is… Yesterday, NSW Police said there’s a $200,000 reward for information that leads to Dalamangas’s arrest. Closer to home for amateur sleuths is the disappearance of Leslie Ball, a Queenslander who vanished near Townsville in 1993. Ball’s body has never been found, and Queensland Police aren’t on the hunt for a specific suspect. They are offering a $500,000 reward for “information that may lead to the conviction of the person or persons responsible for Leslie’s disappearance”. Homegrown detectives, get on it…