I had never watched this show before, but decided to give it a go and watched this episode of Cold Case called Willkommen. I can't even describe how bad it was. It had to be some of the worst, most cliched television writing I've seen in a long while. And the acting wasn't much better. There was actually a scene where the two policewomen get a confession out of the killer in literally 90 seconds. How do they do it? By insulting him that he could "never have been a good actor" and "could never have handled the spotlight" which prompts the guy to scream (in one of the worst bad acting moments of the year) "You're WRONG! I could have been the BEST!" and he then proceeds to deliver lines from the musical "Cabaret" which their community theater had produced like 10 years earlier. Believability isn't this show's strong suit.
All in all, one of the most entertaining (for the WRONG reason though) hours I've seen on television. It was THAT bad.