Nemesis by Jo Nesbo

In Oslo, a bank robber executes a teller after she gives him all the money he asks for. Detective Harry Hole and his colleagues can't figure out why the killer that they've nicknamed "The Expeditor" just didn't leave the bank with his loot. Watching the video of the incident over and over again, they try to glean any clues they can about the identity of the robber. Harry, meanwhile, misses his girlfriend, Rakel, who is in Moscow trying to settle custody issues over her young son, Oleg. When Anna, an old girlfriend, calls, he gets together with her a few times. One morning after being at her house, Harry wakes up with no memory of the evening before. Anna is then found dead and it could be murder. Things get worse for Harry when someone starts sending him messages stating that they know about him being with Anna the night she died. Is someone trying to frame him for her death? It also doesn't help that the bank robberies are continuing. Nemesis is a multi-layered mystery (at times, maybe, a little wordy) that travels from Oslo to South America and introduces a wide range of suspects for the bank robbery and Anna's death. I enjoyed the slow unpeeling of the details to find out who was responsible for each of the crimes. The Harry Hole series is one that should be read in order because Nesbo reveals events that happened in previous books. The English language publishers have really botched the publishing of the series though. Nemesis is the third book to be published in the U.S., but should be read after The Redbreast. After reading The Redbreast and Nemesis, you can read The Devil's Star.