Kansas City detectives say they're close to solving the murder of 20-year-old Kyle Longdon Jr., who was shot and killed on Nov. 17, 2014. But they still need help from witnesses to bring this case to a close. About 40 percent of the murder cases in Kansas City are unsolved. Many of those cases are considered cold. FOX4 Crime Files takes an in-depth look at some of these cases, each one representing a life lost and loved ones searching for answers.

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