Cover by
Steve Lee

Click on the cover
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You can order the book online from the following bookstore:
Amazon.co.uk (Europe): Paperback
Amazon.co.uk (Europe): Hardback
Amazon.de (Deutschland): Overtime

First published January 1993
Publisher: Orbit
ISBN, paperback: 1-85723-126-0
ISBN, hardback: 1-85723-039-6
256 pages.

Overtime - Introducing the greatest performer of all time and a half
The back of the book says:

Only in a Tom Holt novel can you discover the relationship between the Inland Revenue, the Second Crusade and God's great plan to build starter planets for first time life forms...

It all started for Guy Goodlet somewhere over Caen. One moment he was heading for the relative safety of the coast, aware that fuel was low and the Mosquito had more than a few bullet holes in it. The next, his co-pilot was asking to be dropped off. This would have been odd if Peter had still been alive. Since he was dead, it was downright worrying.

But not quite as worrying as when Guy found himself somewhere in the High Middle Ages - rather than in 1943 - in the company of one John de Nesle.
Unsurprisingly, Guy's first thought was to get out and home sharpish. But then he saw John's sister, Isoud, and somehow found himself agreeing to help John, also known as Blondel, in his quest to find Richard Coeur de Lion...

This book has also been translated to German.