First off -- the reader of this audio version, Christina Delaine, was the WORST narrator I have ever heard! I almost threw the CD box in the trash but forced myself through to the end hoping for improvement. There was none. Her pronunciation of words (skele DON instead of TON and BOOO kay instead of Bow) drove me up the wall as did her hoarse-voiced raspy attempt at Archie (and all the other male characters come to think of it. He sounds like he has no personality and is almost dead most of the time -- no emotion. Anyway, the audio version was horrible. If you want to read more in this series, at least get the book.
Now for the review of the story. Well, hate to tell you, but it was not very good either. Victims are found in the waters of the Willamette river - they drowned -- but wait -- what is that puncture wound??? The killing method (blue ringed octopus???) = ridiculous and the whole motivation for the murders quite lame. There was absolutely nothing in this book to redeem the boring characters or the plot. The relentless and pedantic descriptions of the Willamette flooding and the water, water, water, were redundant and uninteresting. The only thing that got me were the needless deaths of some perfectly fine people.
I do not like any of Cain's characters. Susan Ward makes me crazy -- she's so immature and stupid (you'll agree when you read how she manages to yet again insert herself into the clutches of the killer and I'm tired of Saint Archie and his sad sack life, addictions, and in-need-of-therapy self. I was bored by turns and irritated by others. I didn't even care when the climax occurred but wondered why the book went on for several more chapters of blah blah blah. Gretchen Lowell? Well she's not in this book :) This was not suspenseful and not a thriller. Pass.
I won't read another in this series and urge you to just say NO. It really isn't worth your time.