Tappava salaisuus was released in the year 1997。Tappava salaisuus is also called as Fire Down Below, Menace toxique, Fire Down Below - L' inferno sepolto, En tierra peligrosa 2, En terra perillosa 2, Corrupção Total, Ameaça Subterrânea, Alerte sous la Terre。

Environmental protection agent Jack Taggart is fighting big business types led by Orin Hanner who are dumping toxic waste somewhere in the Kentucky hills region. They also killed his fellow agent and are killing the nature of the region.

Tappava salaisuus actors and actresses include Andy Stahl, Harry Dean Stanton, Lana Antonova, Levon Helm, Lisa Guerrero, Marg Helgenberger, Michael Mattison, Newell Alexander, Randy Travis, Scott L. Schwartz, Steven Seagal。