According to wikipedia, HLN used to be the Headline News part of CNN. So it is supposed to be real news.

But looking at its home page shows that V_V is probably right that there is a lot of sensationalizing going on - P(sensationalizing | Nancy Grace is involved) is essentially the definition of (1 - epsilon).

I don't know, I assumed the OP was referring to some crime show like Law and Order, but in fact that might have been some "true story" type of program.
If this is the case, then it should be noted that

• these stories are often fictionalized to some extent

• even if the story was depicted in an accurate and unbiased way, it doesn't mean that is was typical enough to use it as evidence to update your beliefs.