"The deadline was close and I knew now what London had sent me out here to do: define, infiltrate and destroy. And I couldn't do it just by standing in the way of the program Moscow was running. I'd have to get inside and blow it up from there."
...
"The fly fell down." Quiller sent the message off to London as requested. He had just seen a supersonic jet plunge 60,000 feet to its destruction. It was the 36th crash, and more were to come-unless Quiller finds out who is to blame.
That...