Omaha Police are considering broadening the scope to find the killer in the 2008 double-murder case in Dundee.

March 13, 2008 -- someone walked into the Dundee house of two Creighton doctors and stabbed to death their 11-year-old son Thomas Hunter and a decade-long family friend Shirlee Sherman.

It was a bloody crime scene at 54th & Davenport that left the families and neighbors stunned.

Thomas Hunter's father found the bodies a couple hours later when he came home from work. His wife was at a medical conference in Hawaii.

The child had bled to death in the dining room. Sherman, who had a passion for gardening, was dead in the hallway.

"It's hard to figure out why either one would be a target," said Brad Waite, Shirlee's brother. " It’s really a mystery as to why."

The family is vowing to do everything they can to keep the murder case moving forward. The family put up $25,000 to the reward fund which now stands at $54,000.

"Our fear is that it will become a cold case and it will sit on a shelf and they won't be doing anything," said Dan Waite, Shirlee's brother, who doesn't think the murders were random. "That’s one of the most frustrating parts is you just don’t know if it is going anywhere and that wears on you."

"It never enters my mind that it won't be solved," said Omaha Police Lieutenant Ken Kanger. His team has investigated 400 tips --more than most other cases. He also compares notes with other agencies to see if there are any similarities with murders in other parts of the country.

Reporter: "Do you think you know what the motive is?"
Lt Kanger: "I can say in the last few months, we've uncovered some information that has led us in a direction that we're more confident in a possible motive but you can never say for sure."

The information led them back to Thomas Hunter's room and his possessions -- looking for clues and asking more questions.

Was someone targeted? Did the killer want to silence the housekeeper?

Did someone gain the trust of Thomas Hunter through his online video games?

Reporter: "Do you think you know who did it and just can't prove it?"
Lt Kanger: "No... I can't say that unequivocally."

Investigators are considering taking the case to one of the television crime magazine programs for more exposure as a way to expand the knowledge pool of potential suspects.

In the nearly four years of investigation, the time line hasn't changed when it comes to what they believe happened and when. "That’s probably one of the best aspects of this investigation," said Lt. Kanger. "We have very good witnesses and very good information and that helps us put together a time line and find a suspicious individual who was in the neighborhood."

When asked for an interview, Thomas' parents declined. In an email, Bill Hunter wrote: "We have every confidence in Lt. Kanger & his team."

"Both families have been tremendous and have shown more patience than maybe even I could…under these circumstances," said Lt. Kanger.

Witnesses talked about a dark-haired man, with a dark or olive complexion. He was seen walking up to the house in a dark suit, white shirt while carrying a satchel or briefcase over his shoulder.

Lt. Kanger wants to make sure the public doesn't focus too much on the sketch. He wants us to consider the totality of the descriptions. "That’s tough to address…obviously we don’t have anyone in custody so I don’t know if it represents that individual or not. We’ve talked to the witnesses multiple times and at the time, there was a composite put out there. What we don’t want is the focus in the community to be solely on the composite drawing."

Witnesses also noticed a gray Honda CRV parked down the street that day.

If you know something about the case -- you can remain anonymous and receive an award.

To contact police, call 402-444-7867.

"I thought it would be solved a lot quicker," said Dan Waite. "I didn’t think we’d be here four years later."