Ferdinand's power was no longer absolute in Castille now that Isabella was dead.

He sought to overcome these difficulties; but the process was a slow one, and in the course of it, spurred also by increased proofs of his lieutenant's perfidy, Ferdinand lost patience, and determined--the case having grown urgent--to go to Naples in person to deal with Gonzalo.
Plainly, Cesare's good fortune, which once had been proverbial, had now utterly deserted him.
He had received news of what was afoot, and his hopes had run high once more, only to suffer cruel frustration when he learnt that Ferdinand had sailed, himself, for Naples.

In his despair the duke roused himself to a last effort to win his freedom.
His treatment in prison was fairly liberal, such as is usually measured out to state prisoners of consideration.

He was allowed his own chaplain and several attendants, and, whilst closely guarded and confined to the Homenaje Tower of the fortress, yet he was not oppressively restrained.
He was accorded certain privileges and liberties; he enjoyed the faculty of corresponding with the outer world, and even of receiving visits.
Amongst his visitors was the Count of Benavente--a powerful lord of the neighbourhood, who, coming under the spell of Cesare's fascination, became so attached to him, and so resolved to do his will and effect his liberation, that--says Zurita--he was prepared even to go the length of accomplishing it by force of arms should no other way present itself.( 1) 1 Sanuto confirms Zurita, in the main, by letters received by the Venetian Senate.
Another way, however, did present itself, and Benavente and the duke hatched a plot of evasion in which they had the collaboration of the chaplain and a servant of the governor's, named Garcia.
One September night a cord was let down from the crenels of the tower, and by this the duke was to descend from his window to the castle ditch, where Benavente's men awaited him.

Garcia was to go with him since, naturally, it would not be safe for the servants to remain behind, and Garcia now let himself down that rope, hand over hand, from the terrible height of the duke's window.