Patricia Carrol has been sent on an errand to receive a small box; she's promised a sizeable reward, but given no other details.
After a strange encounter with the courier, she finds that she's in possession of a mysterious jewel with an enchanting aura. Before she's able to return to her benefactor, Mrs. Pentdreddle, she is stripped of the jewel. She returns empty-handed only to find Mrs. Pentdreddle has been murdered.
Follow Patricia Carrol as she investigates the mysteries of the murder and the jewel in this thrilling classic novel.