I started watchng Cold Case years ago and truly enjoy the show.  It reminds me of a jigsaw puzzle and the detectives have to put the pieces together.  When you think you have solved the crime or the murder another twist happens and you find out that it is not the person you suspected.  The only problem that I have with the show is that it comes on at 10:00 on Sunday nights and when there is a football game, there may be a 15 to 20 minute delay.  Last year the show came on at 9:00 which was a good time.  I will probably miss some of the episodes until the football season is over.