[The Hidden Target], one of MacInnes' least persuasive efforts, hardly cried out for a sequel. But here [Cloak of Darkness] is anyway: a drab terrorist-hunt that doesn't even feature the vast scenery or the damsel-in-distress setup that made The Hidden Target fairly readable. Robert Renwick of "International Intelligence Against Terrorism" (Interintell), who saved lovely young Nina—now Mrs. Renwick—from super-terrorist Erik in The Hidden Target, is on Erik's trail again: Interintell has received information that Erik's on the loose in Africa. Furthermore, Interintell has learned that two corporations are involved in illegal arms deals—and that these villains have drawn up a "Minus List" (nine enemies to be assassinated) and a "Plus List" (the bigwigs who are secretly funding international terrorism). Interintell, then, has three new missions to accomplish: track down Erik; warn the people on the Minus List (Renwick himself is one of them); and somehow...