The underwater sub called Syren 1 is disappeared at a depth of 30.000 feet , and his designer named Wick (Jack Scalia) is sent down by NATO (main chief played by Edmund Purdom) to investigate it . The mission on board a sub called Syren 2 is commanded by a stiff captain (R. Lee Ermey) , the crew is formed by a misfit group (Ray Wise , John Toles Bey , Emilio Linder , Ely Pouget , Frank Braña) and a scientific (Deborah Adair) , former Wick's love interest . Tracking a black box signal , the submarine heads to the deep rift where they find several surprises and dangers . The danger below is now the danger within . 'You Can't Hold your Breath & Scream at the Same Time'
This Sci-Fi/fantasy movie packs a blending of various films , as the deep rift with astonishing monsters (Leviathan , Deepstar six) , a crew saboteur (Alien) , a giant mother of creepy monsters (Aliens) and abysmal underwater mystery with weird beings (Abyss) . Acceptable interpretation and good acting by Lee Ermey , as always , who brings nice performance as a stiff-upper-lip commander , his usual role . The passable secondary cast is full of Spanish actors , such as : Frank Braña , Luis Lorenzo , Tony Isbert and even Pocholo Martinez Bordiú , grandson of dictator Francisco Franco . Cheesy but enjoyable special effects and creatures by Colin Arthur (The Neverending story) . Scale models and functional maquette work by Emilio Ruiz del Rio and Francisco Prosper . Atmospheric and colorful cinematography by Juan Marine , Juan Piquer's ordinary cameraman . Thrilling and adjusted musical score by Joel Goldsmith , Jerry Goldsmith's son . It's produced in middling budget by Francesca DeLaurentiis , daughter of the great Dino . Francesca hired David Coleman to rewrite a 250 pages draft by Colin Wilson . At the beginning the yarn was set in outer space in an earlier draft of the storyline but then was subsequently deemed an underwater setting , providing more stirring and fantastic scenarios . After producing Leviathan (1989) for about $40 million , Dino De Laurentiis , albeit uncredited, decided to finance for his daughter Francesca this medium budget version of his own bigger budgeted movie .
The picture was professionally directed by Juan Piquer Simon (Slugs , Pieces , Extraterrestrials visitors , Supersonic Man), and also producer . The principal shooting for this film lasted eight weeks . Moreover , an additional editing for fourteen weeks was spent by shooting the special effects being carried out by Colin Arthur and Emilio Ruiz Del Rio . Rating : Average but entertaining.
