The case of the borrowed brunette

Perry Mason and Della Street counted eight in succession, standing on corners a block apart, before pulling up to the curb to investigate. That's how they met Cora Felton, the eighth brunette, and Eva Martell, her roommate, and Adelle Winters, the chaperone who carried a .32 caliber revolver as a persuader. It wasn't just curiosity for long because Mr. Hines, who paid Eva $50 a day to wear another woman's clothes, was found dead with a bullet in his brain, and Perry Mason himself was suspected by the police of hiding the killer. To get out of that jam he had to find a lot of right answers, quick, from a lot of wrong people.