In The Medium Was Rare, Philip Marlowe is preparing for a much-needed getaway to the Feather River country, dreaming of tranquil trout streams and majestic waterfalls. However, his plans are interrupted when Lillian Collins arrives at his apartment, pleading for his help. She explains that her valuable jewelry has been stolen, but she cannot involve the police because her husband, Leonard, would find out. Marlowe, who is initially reluctant to take on a case involving stolen jewelry, finds himself intrigued by Lillian's desperation and agrees to help her.