Four trainloads of assorted ammunition have gone missing somewhere deep in the woods between Germany and Russia. There are plenty of folk willing to lend a hand with the search. There's Renata Fechter, the gutsy eco-cop who first appeared in Accidents Will Happen. And of course there are her old adversaries, the Sheen Associates, a bunch of English chancers still looking for the big score. There's a transvestite hard-man and some Berlin squatters. And then there are the serious bad guys... Brandenburg Concerto sees one of the great English thriller writers in full flow. As Eric Ambler evoked the chaos of central Europe in the thirties, so Julian Rathbone does it for the nineties.