Even dogs in the wild
(Book)

"Detective Inspector Siobhan Clarke is investigating the death of a senior lawyer during a robbery. The case becomes more complex when a note is discovered, indicating that this may have been no random attack. When local gangster Big Ger Cafferty receives an identical message, Clarke decides that the recently retired John Rebus may be able to help. Together the two old adversaries might just stand a chance of saving Cafferty's skin. But a notorious family tailed by a team of undercover detectives has also arrived in Edinburgh. There's something they want, and they'll stop at nothing to get it. As the cases collide, it's a game of dog eat dog--in the city as in the wild" --