Filippo Crosetti was a physician in Milan, Italian People's Republic, and the father of Annarita Crosetti. He became a party to his daughter's efforts to get Eduardo Caruso back to the home timeline. The Crosetti family shared an apartment with the Mazzilli family. Cristoforo Mazzilli, the patriarch, was a midlevel official in the Italian Communist Party. Gianfranco Mazzilli was a year behind Annarita at Hoxha Polytechnic.