Macbeth is sitting in his throne while two of his servants are having a conversation in front of him. They are whispering
Macbeth gives soliloquie about how he believes the two are no good.
Macbeth orders one of his other servant to kill the two whispering
The servant kills one of the servants however the other gets away
The stabbed servant is forced to confess to Macbeth what he was talking about. Macbeth is enraged to hear the servant has fled to England to join Macduff's forces
Macbeth chops off this servants head and orders the other one to be hunted down and executed as he could not be out of the castle yet. seconds pass and you hear the other servant yelp signifying his death.