Author: William Arden

Translator: Lena Fridell

Swedish cover: Robert Adragna

First Swedish edition: 1981 (1979 in the USA)

Editions: 5

Spine-number: 2212-13

Original title: The Secret of Shark Reef

Review:

The Three Investigators help Bob´s father who is a journalist. They are visiting an oil-platform. Strange things happen. Why is the fuel used up when it shouldn´t? This is a thrilling story, but I miss the atmosphere.