Lugin is unable to become Alexander's executioner. He is a nobleman and is ready to defend the emperor to the end. In addition, Peter comes to the rescue. Spartacus orders D'Arny to kill Cherkasov. Lugin reveals a secret to Peter: D'Arnie is his brother. Spartacus himself sets fire to the fire with Alexander, at which point Kuragin and the filler appear. Olga begs Mongo to retract his decision. Varya and Ksenia finally find a way out of the labyrinth and get into the hall where Alexander's execution takes place.