Jasper Sullivan, Earl of Blackwater, needs a prostitute. Not in the usual way, however. His uncle's will bestows a huge fortune among his nephews if each rescues a fallen woman by marrying her! Jasper's estates were mortgaged to the hilt before he inherited them, so when he catches a pretty young prostitute trying to pick his pocket, he immediately proposes. But Clarissa Astley is not what Jasper believes. The orphaned daughter of a prosperous merchant, she is searching London's seedier districts for her abducted young brother.