“I can now explain to you all,” the grand master said, “the reason of our presence here. I have learned that at twelve tonight there will be a general rising of the slaves in this prison, and that, aided by treachery, they will free themselves from their fetters, overpower and slay such of the guards in their rooms as have not been bribed, throw open the gates, make their way down to the port, burn all the shipping there, and make off in the six galleys manned by them, having first overpowered the sentries in the three forts commanding the entrance, and spiked the guns.”