An action-packed story designed to appeal to growing children. Young boys and a girl help the Professor rescue a mysterious black briefcase.

In this adventure story the heroes and heroine of Adventure in Nakura successfully help Inspector Opiyo to bring to an end the activities of a dangerous gang in Mombasa.

Following the author's two previous story books Adventure in Nakuru and Adventure in Mombasa, the young heroes and heroine now work together to help Uncle Kiki, who is in big trouble with the police. He has been framed and is suspected of murder. His young relations track down the witness who can absolve him, and together they trap the real murderer. The story is told with pace and excitement, and is illustrated with fourteen black and white drawings.