How shall I kill him, tell me?

MORANZONE

That night thou shalt creep into his private chamber;
But if he sleep see that thou wake him first,
And hold thy hand upon his throat, ay! that way,
Then having told him of what blood thou art,
Sprung from what father, and for what revenge,
Bid him to pray for mercy; when he prays,
Bid him to set a price upon his life,
And when he strips himself of all his gold
Tell him thou needest not gold, and hast not mercy,
And do thy business straight away. Swear to me
Thou wilt not kill him till I bid thee do it,
Or else I go to mine own house, and leave
Thee ignorant, and thy father unavenged.

GUIDO

Now by my father's sword -

MORANZONE

The common hangman
Brake that in sunder in the public square.

GUIDO