After the death of Alan Stanley, Maud Fergusson seeks revenge. On her behalf, the detective Hunt begins to investigate and proves that Murphy is responsible for the murder. Maud's revenge plan involves launching a newspaper campaign against Murphy, defaming and embarrassing him.
Through the plan hidden in Astarte's jewelry, Maud Gregaards, Kien-Lung and Consul Madsen get on the trail of the Queen of Sheba's treasure. Their search takes them to Africa, where they want to know from King Makombe the location of the Fire Mountain, near which the legendary city of Ophir, the center of the Astarte cult, is said to be.
Maud Gregaards travels to China in search of a fabled treasure said to have belonged to the Queen of Sheba. Once there, she is taken captive by an evil man and nearly killed in the belief she is a witch.
