“Raven’s Eye: A Brock and Kolla Mystery” is a Bristish mystery set in London. What first appears to eb an accidental death of a young woman due to the malfunction of a furnace emitting carbon dioxide, turns out to be much more complicated. The woman lived on a “narrow boat” on a canal in London. It turns out her sister was “accidentally” killed a year ago in a hit-and-run accident while riding her bicycle.  Detective Kathy Kolla investigates and finds people who definetely want her to close the case quickly. Her suspicions drive her to pursue clues on her own time which gets her in trouble with the new Superintendent as well as putting herself in physical harm. The plot veers off onto a technology related crime.