Dark Wings Descending

One of my pet peeves - yes, I know, there are many - is having American characters who are so very obviously British. They even had accents in my head because they spoke like no Chicagoan, or any native born American, I've ever met. I've heard that some American readers don't like to read books set in the UK but I would much rather have that and have the characters feel more genuine than having to ignore that they're supposed to live in a major American city down the road from where I'm sitting.
There were some good lines in the story but the things that didn't work - the mystery, the romance, just about anything related to the police procedures - made it impossible for me to enjoy it. The end also screamed series so maybe the author will take care of some of these issues before the next one comes out.