Marcellus: what! has this thing appear’d again to-night? bernardo: i have seen nothing. marcellus: horatio says ’tis but our fantasy, and will not let belief take hold of him touching this dreaded sight twice seen of us: therefore i have entreated him along with us to watch the minutes of this night; what is the effect of this dialogue? it creates an air of suspense in the plot. it shows how angry the characters are. it describes details of the castle setting. it entertains through the use of clever wording.