The Macbeth Gambit is blaming an innocent dead party for murder, as has happened in the Benazir Bhutto , John Kennedy and 911 cases - He was a nobleman in King Duncan’s Scottish Court, who slew the King then two of his loyal retainers in dead of night.

When morning came he told all that the retainers had done the deed, and that he had killed them in just retaliation, and was thereafter crowned King himself.

He did not get away with it and eventually met his own death as he had lived, by the sword wielded by Duncan’s more loyal kinsmen, who told Macbeth just where he could shove his story, and who made immediate war on the new King. Read Wm. Shakespeare, The Tragedy of Macbeth.