A fast-paced, exciting and well researched thriller from British technothriler pioneer Craig Thomas. The Birmingham locations such as Edgabaston and the NAtional Exhibition Centre are authentic, as I live in this city and can idnetify with places described. The submarine scenes are highly throlling and supercharged - the Catherine Wheel weapon inspired Dale Brown! Rather feasible. As for the Leopard anti-sonar device - is that prophecying stealth technology?(this book was written around 1980). Altogether, if you can get hold of this, this is well worth a read. Written before 'The HUnt For Red October', but on the whole just as good, if not better, if you love submarine novels as much as I do at times. The British settings add to the interest.