midnight
But there was a look in Gouache 's face which Giovanni remembered , and an expression of kindness in Corona 's eyes that he had not forgotten ; above all they had both seemed as though they were sure that no one was watching them . Indeed , Sant ' Ilario now asked himself how he had chanced to see what passed , and the only answer was that he generally watched them when they were together . This was a revelation to himself , and told much . Then there was her midnight expedition with Gouache , a far more serious matter . After all , he had only Corona 's own assurance that Faustina Montevarchi had been in any way concerned in that extraordinary piece of rashness . He must indeed have had faith in his wife to pass over such conduct without a word of explanation . Next came the events of that very afternoon .