what will Macbeth do to Banquo?

I think Macbeth will kill Banquo because Macbeth knows that Banquo is starting to catch up to what Macbeth and his wife Lady Macbeth have been doing. So Macbeth will likely set up Banquo and kill him some where were no one can witness what happened to Banquo. Macbeth will have no mercy over Banquo. But sooner or later the truth will reveal its self. Macbeth will problby act like nothing has happned and little by little his guilt is going to start killing him slowly.