Psychopaths…theyll charm you, manipulate you, then ruin your life. But, not all of them with a gun or a knife.Sam Vaknin, a twice-diagnosed narcissist, travels across Europe with his wife, Lidija Rangelovska and the Australian documentary film director Ian Walker in search of a diagnosis: is he also a psychopath? Numerous tests latest - PCL-R and MRI included - the answer is a definite maybe.