There are steps that investigators must take when attempting to solve a case. They must look into witness accounts; collect crime scene evidence; look for clues in the area and in the victim’s life. They must comb through handfuls of different aspects of a person's life meticulously because the tiniest shred of information could lead to a breakthrough in the case. But, sadly, there are some cases where so little information is available that the case becomes near impossible to solve. In today’s video, we’ll be exploring four cold cases with no clues or evidence…