Chocolate Fever is a juvenile fiction story that was authored by Robert Kimmel Smith.
Both Mrs. Kimmelfarber and Nurse Farthing smell a mysterious odor of chocolate in the air, which they initially think little of.
Dr. Fargo announces that Henry is the first person in history to be diagnosed with "chocolate fever", and makes plans to broadcast his discovery to the world.
That night, an exhausted Henry attempts to hitchhike beside the highway, where he is picked up by a delivery driver named Mac.
Now left with two unexpected hostages, the crooks take Mac and Henry back to their hideout and tie them up while they plan what to do next.
A group of dogs on the trail of Henry's chocolate aroma burst into the hideout, distracting Lefty and Louie while Mac frees himself and takes their guns.
He joins his family at breakfast, where he learns that Mr. Cane, Mac, Nurse Farthing, and Dr. Fargo have all called to check in on him.