The psychiatrist Doctor Knowles is treating a woman named Margo after the death of a famous musician named Martie Draw. According to Knowles, Margo has a strange melancholia since the famed Mr. Draw passed away. Visiting Margo with Knowles, Grimm, The Ghost Doctor is introduced to Marie, Margo's nurse. They discover Margo has been poisoned. Grimm suspects Marie, as does Margo when she is alone talking to the nurse.