The Adventures of Doctor Fu Manchu

The Adventures of Doctor Fu Manchu (also known as The Adventures of Dr. Fu Manchu or The Adventures of Fu Manchu) was a 1956 American syndicated television series that was based on the series of Fu Manchu novels written by British author Sax Rohmer. It starred Glen Gordon and Lester Matthews.

The Prisoner of Doctor Fu Manchu (Season 1, Episode 1)
Fu Manchu (Gordon) hypnotizes Betty (Carla Balenda) into injecting an important diplomat (Leonard Strong) with a deadly poison- part of his plan to disrupt an upcoming world peace conference.