Since the television serials are full of heavily polished models and all kinds of profanity but not talented.
I find C.I.D. is a nice serial. Almost all the characters (except some girls sometimes) are well dressed and they play their roles very seriously. The kind of story they choose is always interesting. They don’t use unnecessary scene based high volume background music which makes the serials more realistic. Most importantly, this is one of the serials which can be watched anytime with friends and family.