Black was murdered on November 30, 2010. Since that time police have followed several leads, but all of them have hit a dead end. They have no suspect, person of interest in the case, or motive.
Police believe the killer was a male and lived in the neighborhood at the time of the murder. They say it's possible he could still be in the area.
With that in mind, Black's family hopes the larger sum of money will give people incentive to come forward with any information that could lead to an arrest and conviction.
"It may be your daughter, your wife, your mother that's the next victim, so please share any information you may have with us no mater how insignificant it may seem," said Black's son in law and Larry H. Miller Group CEO, Greg Miller.
The $100,000 reward will last until Dec. 31st. Afterward, it will return to $50,000.
If you have any information, contact the South Salt Lake Police Dept.