Singer-songwriter Winslow Leach seeks revenge on the nefarious music producer Swan, who steals both Winslow's music and his favorite singer for the grand opening of his new rock palace, the Paradise.
Harper is a cynical private eye in the best tradition of Bogart. He even has Bogie's Baby hiring him to find her missing husband, getting involved along the way with an assortment of unsavory characters and an illegal-alien smuggling ring.
