More than 100 cold cases are unsolved in Southern Colorado.
One investigator feels that even though cases are a challenge to solve, they are not impossible.
Bobby Brown has been working and solving cold cases for more than 40 years.
He says cases can go years without being solved, but no crime is perfect.
"They cannot, not, leave some form of evidence behind," Brown said.
Investigators are still finding DNA and fingerprints for their case, but with advances in technology and the growth in popularity with social media, cold cases can easily be closed cases.
"I can sit here with my computer right there, not leave this office, and do things that I would use to have to spend thousands of dollars to jump on a plane and interview somebody," Brown said.
But he feels technology doesn't replace good detective work.
"The investigator is key, and the team of investigators, I mean if it's a sloppy investigation, it is what it is," Brown said.
But in order for cases to be quickly solved, there must be a good relationship between investigators and the media.
"There is so much we can do, there are so many resources and we have to use them all to work together and bring closure for these families," Brown said.
The Colorado Bureau of Investigation has more than 100 cold cases in its data base, if you have information regarding the cases click here.