Many had conspired to do the deed, and as Dion was sitting with his friends in an apartment containing couches for entertainment, some of the conspirators invested the house outside, while others stood at the doors and windows of the apartment. The actual assassins, who were Zacynthians, came in unarmed and without their cloaks. Then at the same time those outside closed the doors and held them fast, while those inside fell upon Dion and tried to strangle and crush him.
They made no headway, however, and called for a sword; but no one ventured to open the door. For Dion's companions inside were many in number; but each of them thought that by abandoning Dion to his fate he would save his own life, and so no one ventured to help him. After some delay, Lycon the Syracusan handed through the window to one of the Zacynthians a shortsword, and with this they cut Dion's throat as if he had been a victim at the altar; he had long since been overpowered and was quivering before the stroke.
At once, too, they cast his sister into prison, together with his wife, who was big with child. His wife had a most wretched confinement, and gave birth in the prison to a male child, which the women ventured to rear, with the consent of their guards, and all the more because Callippus was already involved in great trouble.