The case of a prominent valley real estate developer, found murdered inside his own office four years ago, has gone cold.
To this day, police still have not made an arrest in the murder of Irving Shuman.
His family is stepping forward, offering a hefty reward and hoping someone will reveal information leading to an arrest.
Shuman's son and daughter are offering a $30,000 reward for justice for their father.
"My father was 84 he had the spirit of 44, he loved life, he loved this community," says Rick Shuman.
He smiles slightly when talking about his dad, Irving Shuman, but says it took a long time to get to this point.
His dad was found murdered at his office near 7th Avenue and Camelback back in 2008. His girlfriend found him inside. He'd been strangled with a telephone cord.
His family is heartbroken. They never got a chance to say goodbye.
"It's been a struggle, I think that myself and my sisters have done everything we can to try and honor my father's spirit," says Shuman.
His dad's Lexus was found in California shortly after the murder. There were a group of men inside, but police were never able to tie any of them to the case.
Now four years later, no solid leads. Amy Shuman says it's difficult to move forward when the killer is still out there.
"I want justice for my dad, nothing is going to bring him back but for me I really think I would feel better," says Amy.
Her dad was a successful real estate developer who strongly believed in giving back. At the time of his death, he had contributed to more than 100 charities. He was also very active in the Jewish community.
"Honestly we think about him every single day, we're grateful to him every single day," says Rick. "That was the kind of father he was, he inspired you to become the best person you could."
The reward is $30,000. The family says the reward is only temporary. It will expire October 22nd.
The Shuman's say they chose to do it this way with the hopes that someone will feel compelled to come forward now and do the right thing.