What is the theme in Tooth & Nail: An Inspector Rebus Novel by Ian Rankin?

Ambition is another theme in the story. Lisa Frazer is ambitious. Lisa is working on her PhD in psychology and she imagines one day working with the police as a profiler. Lisa lies to Rebus and tells him she is already a psychologist in order to get a look at the Wolfman files for a school project. Rebus believes Lisa is a psychologist who hopes to become a profiler, so he not only lets her see the files, but he listens to her ideas and uses some of them in the investigation. This ambition puts Lisa in harms way when the press take a picture of her and label her a police psychologist.