not if post on free republic that you think you are smart enough to get away with murder
However, I would guess a lot of those are fairly easy cases with witnesses, motive/means/opportunity laid out fairly obviously by people committing crimes in passion, even people that turn themselves in, etc. I haven't been able to find any data on what the clearance/success rate is for premeditated murders - where people actually took their time and made it difficult for investigators.
I was being hypothetical. Murder is of course illegal. I believe planning one is also illegal. While I don't have daughters, I can understand how the father in this case was driven to these extreme measures. In other words, the prosecution would probably reject me as a juror in this kind of case after even just two minutes of selection/questioning.