|Puffin paperback, 1977. Cover illustration by Peter Goodfellow.|
"The Duelling Machine was invented to keep peace in the outer galaxies. But in the hands of ambitious and violent men it is misused, and not even its inventor seems able to put things right. Will war envelop the universe? Or will Lieutenant Hector Hector of the Star Watch police succeed in wrestling control from the sinister and ruthless Odal?"