<p><b><font></b>''An irresistible concoction of crime and culture'' <i>Daily Mail</i></font><br><br><b>A game of blackmail and betrayal is played among the backstreets and canals of Venice . . .</b><br><br><i>Carnevale </i>is in full swing, the streets and waterways of Venice are crowded with masked revellers and Nathan Sutherland''s birthday is about to be ruined.<br><br>A night at the opera at La Fenice is always a memorable experience - and this time it will be so for all the wrong reasons as the curtain call is interrupted by a fatal stabbing. But why is the dead man carrying one of Nathan''s business cards in his wallet?<br><br>The mystery of the murdered stranger takes Nathan on the trail of a lost opera by Monteverdi. But what begins as a harmless treasure hunt leads to ruthless criminals asking the highest of prices for the lost score... and then a second body is found in the sanctuary of Venice''s English church.<br><br>The quest for the lost manuscript will bring Na