Blackstone; Vivian Trent; Bill Marvin; Armand (dies); Hothgo (dies); Mombo (villain, dies); Dotha; Professor Trent; Zurich (villain, dies)
Synopsis
Blackstone journeys north from South Africa to Rhodesia to help Vivian find her father. They find him a captive of Mr. Zurich, who is forcing the professor to develop weapons he can sell to the highest bidders. Blackstone wins a duel of magicians and helps the Trents escape.
The Cape-Cairo Railway has yet to be completed. Its northernmost terminal is Kapiri Mposhi (in central Zambia). Hence, Blackstone couldn't have traveled to Cairo on it.
When the statue of the lizard-lion tells the natives that they must bring all of their ivory to the temple Rex King decides to find out what is going on, as the tribe will starve without the ivory to trade for food.