Suddenly, mysteriously, four key government officials have been struck blind, the victims of brilliant and ruthless terrorists. And now a threat has been made on the Prime Minister himself.

It is the toughest case Department Z has ever handled, and Gordon Craigie has to solve it fast, before the terrorists used their secret weapon to gain world power. But how could Craigie’s blind eyes penetrate the black veil of intrigue?

Dark Peril (1944) is the 21st novel in the Department Z series.