When the plane, with call letters 'Tango Victor', flying from England, crashes in the Sahara, the whole of the Bureau goes into major activity. This includes pulling Quiller from an assignment in Tokyo with a 'Most Urgent' directive to find and investigate the crash site. Note: This is an AWESOME book. A high-speed car chase in the streets of a North African city is one of the best you'll ever find. Best of all is the ending. It has to rank as one of the very best ending in all of spy fiction!