Blood Crying From the Ground
We don't know about y'all but the solving of cold cases--particularly murder cases--brings a sense of satisfaction. Justice, in this world, is a somewhat ephemeral concept; in eternity justice will be both real and holy. Therefore, the capture and punishment of extreme evil doers brings with it a sense of "putting things right" as far as we are able, whilst awaiting that great day to come.
The Bible speaks of the blood of innocent victims of murder crying out from the ground to God. There is an abiding curse and divine anger that broods over a society which carelessly fails to achieve preliminary justice in this world, prior to the administration of eternal justice.
Consequently, we find that the rehearsal of cold cases in the media--cases which have never been solved by the state--has always been, not merely interesting, but important and necessary. It is holy work, if you like. In this vein, we are cheered by the recent progress made in one unsolved cold-case of murder.