Timothy Appleby, "A New Kind of Monster" (2011)

Subtitle: "The Secret Life and Chilling Crimes of Colonel Russell Williams."

This 'true crime' book documents the many crimes committed by a well-respected, high-ranking member of Canada's military. It is a relatively easy, although certainly disturbing, read. Appleby refrains from wading into 'pop psychology' to explain Williams' behaviour, concentrating instead on narration.

Here's a link to the publisher's webpages for the book.