Thus all suspicions of a plot would be avoided, and the real assassins would escape justice.
This well-devised scheme was nevertheless unsuccessful.

When Francesco left Rome, the scout sent in advance by the conspirators could not find the bandits; the latter, not being warned beforehand, failed to come down before the passage of the travellers, who arrived safe and sound at Rocco Petreila.

The bandits, after having patrolled the road in vain, came to the conclusion that their prey had escaped, and, unwilling to stay any longer in a place where they had already spent a week, went off in quest of better luck elsewhere.
Francesco had in the meantime settled down in the fortress, and, to be more free to tyrannise over Lucrezia and Beatrice, sent back to Rome Giacomo and his two other sons.

He then recommenced his infamous attempts upon Beatrice, and with such persistence, that she resolved herself to accomplish the deed which at first she desired to entrust to other hands.
Olympio and Marzio, who had nothing to fear from justice, remained lurking about the castle; one day Beatrice saw them from a window, and made signs that she had something to communicate to them.

The same night Olympio, who having been castellan knew all the approaches to the fortress, made his way there with his companion.