for the giant transport, that would have to be checked later. And once the program was underway, it had been guided with a skill that bordered on genius. Orders were originated in many places, passed on, changed and shuffled. I painfully traced each one to its source. Many times the source was a forgery. Some changes seemed to be unexplainable, until I noticed the officers in question had a temporary secretary while their normal assistants were ill. All the girls had had food poisoning, a regular epidemic it seemed. Each of them in turn had been replaced by the same girl. She stayed just long enough in each position to see that the battleship plan moved forward one more notch.
This girl was obviously the assistant to the Mastermind who originated the scheme. He sat in the center of the plot, like a spider on its web, pulling the strings that set things into motion. My first thought that a gang was involved proved wrong. All my secondary suspects turned out to be simple forgeries, not individuals. In the few cases where forgery