Giacomo Casanova and sister Maria Maddalena were living. His new play, "La Moluccheide", now lost, was performed at the Royal Theatre, where his mother often played in lead roles. He then visited Prague and Vienna, where the tighter moral atmosphere of the latter city was not to his liking. He finally returned to Venice in 1753. In Venice, Casanova resumed his escapades, picking up many enemies and gaining the greater attention of the Venetian inquisitors. His police record became a lengthening list of reported blasphemies, seductions, fights, and public controversy. A state spy, Giovanni Manucci, was employed to draw out Casanova's knowledge
Giacomo Casanova capital city and principal cultural center of Bohemia, on many occasions. In October 1787, he met Lorenzo da Ponte, the librettist of Wolfgang Amadeus Mozart's opera "Don Giovanni", in Prague at the time of the opera's first production and likely met the composer, as well, at the same time. There is reason to believe that he was also in Prague in 1791 for the coronation of Holy Roman Emperor Leopold II as king of Bohemia, an event that included the first production of Mozart's opera "La clemenza di Tito". Casanova is known to have drafted dialogue suitable for a Don