A deep dive into high stakes killings, conspiracies and crimes!Ruthless killers and murderers for hire: they are here, there, and everywhere. They lurk in the shadows, ready to pounce. They terminate on command. And, in the process, they change the course of the world. They are among the world's most cold-hearted, deadly, and emotionless figures. They are assassins, and they have a long history of...