Robot Murder!

I had a scary thought.

If robots get good at walking, running, AI, holding a knife, using that knife to slice into a melon and serving it you while doing the robot dance; then what would stop someone buying an "unlicensed" robot off the black market and programming it to go and kill someone?

I've always thought it must have been great in the old days when you could murder someone and easily get away with it. Now with forensics it's almost impossible to get away with a bloody, horrific murder. Are these days of good ol' murder without getting caught going to come back - just with a new modern twist? One can only hope so.