The seventh sun

When a marine geologist is thrown overboard from a cargo ship off the Honduran coast, scientist Dan Clifford teams up with Rachel Sullivan, a brilliant marine biologist and submersible pilot, to unravel the mysterious clues the dead man left behind. They discover a global conspiracy involving illegal, undersea activities. A primordial secret disturbed by these dangerous acts is wreaking havoc on aquatic life and the local human population, endang...