The investigation of a young Estonian woman's death leads Banks to uncover a world of prostitution and drugs hidden behind a respectable veneer.

The team are dismayed to discover that an arson attack at the Osgood's house has injured Michael and killed his autistic son Robbie.

A husband and daughter struggle to come to terms with their grief when the body of wife and mother is found washed up by an underground river.

Banks puts Geoff and his daughter under watch at a hotel while he widens the search for the gunman.

When the body of a university undergraduate is found dumped in a ravine, the investigation reveals he was far from being a model student.