The first sequel Holborn sees us re-join Tracy and The Commander some three months after Hainault in the last few days before Christmas.
Their relationship has developed so far that Al Longton is now running a book on when they are going to get married, however all thoughts of this and Christmas are soon put on hold when a dangerous, armed and highly professional gang of robbers strike at some of Haychester's key public buildings using unusual means of entry. Also we see something of the future as The Commander and Tracy are about to take up new positions in the London Transport Section of the Security Service, an area that is covered more in the second sequel Waterloo.
It was just like any other ordinary lorry, a blue Ford Cargo, the tatty remains of old sign writing on its slightly faded sides. Had there been anyone around, i...