Cardan hurried to Milan to hear from Bartolomeo Sacco, his son-in-law, the full extent of the calamity. Probably there were few people in the city who did not regard Gian Battista as a worthless fellow, whose death would be a gain to the State and a very light loss to his immediate friends, but Cardan was not of this mind. He turned his back upon his professional engagements at Pavia, and threw himself, heart and soul, into the fight for his son's life. He could not make up his mind as to Gian Battista's recent conduct; if he ate of the cake, he surely could not have put in poison himself, or directed others to do so; if, on the other hand, he had poisoned the cake, Cardan feared greatly that, in the simplicity of his nature, he would assuredly let his accusers know what he had done. And his mind was greatly upset by the prodigies of which he had recently had experience. For some reason or other he did not visit the accused in prison, or give him any advice as to what course he should follow, a piece of neglect which he cites as a reproach against himself afterwards; but certain associates of Gian Battista, and his fellow-captives as well, urged him to assert his innocence, a course which Cardan recognized as the only safe one. At the first examination the accused followed this counsel; at the second he began to waver when the servant deposed that his master had given him a certain powder to mix with Brandonia's food in order to increase her flow of milk; and, later on, when confronted with the man from whom he had received the poison, he confessed all; and, simpleton as he was, admitted that for two months past his mind had been set upon the deed, and that on two previous occasions he had attempted to administer to her the noxious drug against the advice of his servant. From the first Cardan had placed his hopes of deliverance in the intervention of the Milanese Governor, the Duca di Sessa, who had not long ago consulted him as physician,[189] but the Duke refused to interfere. The intervention of an executive officer in the procedure of a Court of Justice was no rare occurrence at that period, and Cardan was deeply disappointed at the squeamishness or indolence of his whilom patient. He records afterwards how the Duke met his full share of the calamities which fell upon all those who were concerned in Gian Battista's condemnation;[190] and in the _Dialogus Tetim_, a work which he wrote immediately after the trial, he bewails afresh the inaction of this excellent ruler and the consequent loss of his son.[191]