As a potentially concluding novel in the Inspector Rebus series, this is just one of the 17 excellent instalments which account for 10% of all crime book sales in the UK. Rankin unleashes gritty tales that depict a stark picture of Scotland, characterised by corruption, poverty, and organised crime. Although it is supposed to be the last, 'Exit Music' will leave you gasping for more of this uncompromising world of crime.