Chinese Puzzle (Detective Max Rydal)

the long version

Two members of a British regiment are murdered by the lethal injection of an unknown toxin: a senior officer in possession of NATO secrets vanishes from a high-security base in Germany. Is he the killer or the third victim as yet undiscovered? Military detectives Max Rydal and Tom Black are baffled. There are no murder weapons, no witnesses, no apparent motives. The only link between the victims seems to be that they were all universally liked. Slowly, Max and Tom peel away the layers of this Chinese puzzle and find out interesting facts about the victims time serving in Hong Kong and an event that led to murder . . .