Smith and Dr. Petrie discover that Fu Manchu is using an exotic poison to eliminate people whose knowledge threatens his plans.

This Fu Manchu broadcast aired on May 10, 1939. The cast includes Hanley Stafford and Gale Gordon.

This version is based on The Insidious Dr. Fu Manchu.

This surviving item is preserved as serial segment.

Serialized radio adaptations of Sax Rohmer's Fu Manchu stories, following the struggle of Nayland Smith and Dr.

Listeners can expect adventure, mystery, and thriller, serialized drama in format, and suspenseful and adventurous in tone.