Macbeth kills him because Banquo starts to work out that Macbeth killed dDuncan
Macbeth takes them 100% seriously and completely believes them Banquo on the other hand takes it with a grain of salt and calmly waits for fate to work itself out.
Macbeth's plan was to murder fleance and banquo but it was not accomplished fully because fleance was able 2 escape
The banquet was a turning point for Macbeth because when hismurderer's killed his best friend ,Banquo. Macbeth saw Banquo's ghost at his coronation and was shocked. After the shocking bit, Macbeth felt ill and was sent to bed.Lady Macbeth was relived to see her evil plan work and she had purposely sent Macbeth to bed and out of sight.
The relationship between Banquo and Macbeth was one of colleagues.According to Act 1 Scene 2 Line 34, both Banquo and Macbeth were captains. They appeared to work well with each other on the job (Lines 34-41). They also appeared to carry that good working relationship over into an equally good friendship ... until things changed with Macbeth's plotting and carrying out the murders of first his sovereign and then his best friend!
Macbeth's plot worked against Banquo, who had his throat slit. But it didn't work against Banquo's son Fleance, who escaped. In Act 3 Scene 1 of the Shakespearean play, Macbeth [c. 1014-August 15, 1057] met with two murderous thugs. The meeting ironed out the details for the murder of the father-and-son rivals to the throne of Scotland. In Act 3 Scene 3, the two murderers were joined by a third. Between the three of them, they only managed to slit Banquo's throat. Perhaps they had counted on Fleance to stay and defend his life and that of his father's. But Fleance ran.
He kills Banquo to thwart the prophecy about Banquo's issue becoming kings, but it doesn't work because Fleance escapes. He kills Macduff's family because of the warning to "Beware Macduff" but it doesn't work because Macduff escapes. Both times he kills the wrong person or people.
At this point in the play, Macbeth is troubled and confused. He is afraid of Banquo--"My fears in Banquo stick deep"--because Banquo knows about the witches's predictions and may suspect (and in fact does) that Macbeth murdered Duncan. The murder has made him into an insomniac and a paranoid, and he asks himself if it was worth it. Well, he is pretty sure that it wasn't. So it annoys him that the benefit of the murder, such as it is, will not extend beyond his lifetime. Therefore, since he is annoyed that he has made "the seed of Banquo kings" he hopes to frustrate the prophecy by killing Fleance. But this is ridiculous--he cannot benefit his own children because he doesn't have any. Murdering Fleance will not help matters. But Macbeth is hardly rational at this point (or indeed at any point after he kills Duncan)
Banquo had two reactions to the news of the death of King Duncan I [d. August 14, 1040]. In Act 2 Scene 3 Lines 81-83, he characterized the killings as so cruel as to hope that Macduff was mistaken. In Act 3 Scene 1 Line 3, he considered the royal killing the foul work of Macbeth [c. 1014-August 15, 1057].
The cast of We Work Again - 1937 includes: Eric Burroughs as Hecate Jack Carter as Macbeth Lawrence Chenault as Doctor Alma Dickson as The Duchess Maurice Ellis as Macduff Juanita Hall as Herself - Choir Director Bertram Holmes as Young Macduff Zola King as Third Witch Canada Lee as Banquo Edna Thomas as Lady Macbeth Wilhelmina Williams as First Witch
The true reason is unknown and only inferences can be made. It is possible that MacBeth feared that the other two murderers would not do as he told them and MacBeth sent a third murderer to keep and eye on them. He may have also thought that two murderers alone would be unable to carry out the killing of Banquo and after realizing the fact he decided to send a third. If this was the case then MacBeth was partially right because although the murderers were able to kill Banquo his son, Fleance, escaped. Also, there's a theory that Macbeth himself was the third murderer
Here are a pile of ideas: In the Australian movie of Macbeth starring Sam Worthington which was made in 2006, Macbeth was a drug lord and the witches were schoolgirls and very creepy. In the 1998 TV movie directed by Michael Bogdanov, Macbeth and Banquo ride motorcycles and the witches are bag ladies living in a dump. The stage presentation at Stratford Ontario starring Colm Feore had Macbeth as a modern mercenary in an African country and the witches as tribal witch doctors. Or the witches could be Voodoo priestesses if you wanted to give it a Caribbean slant. Set it in Haiti, maybe. Or suppose the witches are inmates of a mental asylum. The Patrick Stewart production which was filmed by PBS the witches are nurses and the castle resembles an old-style meat packing plant. One of my personal favourite possibilities is to have the witches as residents of a personal care home, who sit in wheelchairs cackling. Or at the other end of the spectrum, they could be "spin doctors" in stylish suits giving Macbeth and Banquo advice on what's trending now. In order to decide on this you have to decide what part the witches play. Are they real or illusionary? Do they really have the power to predict, or are they talking randomly, and does Macbeth make their prophecies happen? Are they frightening? or just strange? Once you know what you want to do with them dramatically, you can eliminate portrayals that won't work. The personal care home residents are not likely to be particularly frightening. Once you know who the witches are, then it is easy to know how they dress.