Macbeth is a very exciting story containing all kinds of plots and murders. The characters that are killing and are planning murders are all very deceiving and treacherous. Two of the most dangerous criminals in this play are Lady Macbeth and her husband. Together they commit the most dreadful murder by killing the King; Duncan. This is why it is difficult to determine which one of these two is more guilty, because they each do their own part in committing the crime. Lady Macbeth would prepare the plan and then encourage Macbeth to go through with it. Macbeth did the actual murdering, he was also the first person who thought about killing Duncan.