A Japanese agent warns that a UN negotiator will be assassinated in New York by a Tokyo-based organisation. She is killed before she can give the details and Blake is sent to Tokyo to investigate. The only clue is a pendant the girl had.
An electronics expert working for the secret service suddenly retires. M9 needs to know why and Blake takes his place. He follows the clues to an island off Japan, Shinda Shima, a place where there have been several unexplained deaths.