Penny sees a man escape from a doctor's office, and is informed that the man is a dangerous mental patient. Sky looks into the incident, and soon finds himself mixed up in foreign spies and poison gas.
Penny sees a man attempting to flee from two men in white coats and is told that the escapee is a mental patient who broke out of a sanatorium. Sky King learns that the escapee is actually a scientist who knows the secret formula for a deadly new kind of poison gas and the "doctors" were really foreign spies.—David Bassler