The ""sleepers"" here are members of a communist espionage cell, gestating for fifteen long years in New Zealand. The revival process is a kiss of death as they try to steal a new laser process. In the meantime, reactivated in British counter-espionage is Michael Connor, slightly out of shape but with a saving sense of humor. Particularly when it comes to his nemesis Miss MacDonald, bumbling agentress or superb superior? In any event, a smooth operation, not too chitty chitty or bang bang... satisfying.