Lately I've been exposed to crime stories on TV, as I've mentioned before. Murder isn't my thing, sure I kill people in my books, but never murder. I get bored and switch from my viewer mind to my writer mind.
Looking at the misdirection angle, some of them are sloppy - dropping clues over the transom. Some of the writing is excellent. The difference is connecting the dots, of course, in a logical/believable way.
The suspect always lies and the stars always know they are lying and trip them up with a clue.
I'm not as quick with spotting lies. I don't lie because it is too much trouble to keep them straight. When I catch someone in a lie, I'm angry. For me, each caught lie erodes the relationship until there is nothing worth salvaging.
So the writing stretch for me would be to learn to write a character who is a believable liar. Wonder if I can do it? What type of character would be a stretch for you to write?