Night of Error
Desmond Bagley
 After receiving news that his brother Mark has died in suspicious circumstances in the Pacific, marine biologist Mike Trevelyan discovers that Mark′s latest research may have discovered a lucrative source of manganese beneath the sea. With only two clues — a notebook in code and a lump of deep–sea rock — Mike's investigations trigger the start of a hazardous marine expedition and a violent confrontation far from civilisation.