Perry Mason becomes involved in a case involving avid coin collectors, fake coins, fraud - and murder. It all begins when Paul Drake is hired by Minerva Doubleday whose Uncle Homer Doubleday owns a local coin shop. She wants Drake to act as a go between in delivering a rare 1861 Confederate half dollar to an anonymous buyer who has agreed to pay $50,000 for the coin. She's afraid for her own safety so gets Drake to follow the buyers elaborate instructions. Both Drake and Perry wonder if the coin is real and Perry visits an acquaintance, Howard Hopkins, to see if it's real. Hopkins has made many efforts to buy the rare coin but Doubleday refuses to sell to him due to previous interactions. Drake is intercepted along the way and redirected back to Doubleday's coin shop where he finds Minerva standing holding a gun over the body of George Parsons, another who was very interested in the coin. Parsons was blackmailing Doubleday over fake coins he made for Parsons. Perry defends Minerva when she is charged with Parsons' murder.
—garykmcd