Kathleen Brown has come a long way from England to Italy. She wanted to see her half-sister Arlette, who reported that she was happy in Venice and would soon become the wife of Count di Rini. In the palazzo of the di Rini family, Kathleen met the seductive Edward Morok and learned that all Arlette’s stories were a hoax, and she herself no longer lived here. Kathleen wants to find out what really happened, and accepts the offer of the Count and his sister Bianca to live in the palazzo.