- "When you walk on the wild side, danger is always coiled to strike!"
- — Tagline, from the front cover
Law of the Jungle is the 105th book in the The Hardy Boys Casefiles series.
Frank and Joe Hardy are bound for the jungles of Borneo, and the journey may be one of the most desperate and dangerous of their lives. Following a cryptic map sent to them by their father, the boys head into the heart of darkness, where they make a terrifying discovery: Fenton Hardy is on the brink of death!
Someone has injected Fenton with a fatal dose of Anthrax-B, and the Hardys have only seven days to find the cure...or lose their father forever. The news gets worse when they learn who and what they are up against: Assassins. Experts in terror, The Assassins are the epitome of evil -- and international netwok that lives to kill!
Law of the Jungle is the first book in The Hardy Boys Casefiles series to feature live action photographs as cover art. This was done to promote the Hardy Boys television series that was running at the time of its release, featuring the two actors on the book cover as Frank and Joe Hardy.