Say Goodbye by Lisa Gardner

What the cover says:
Young women are disappearing... girls no one will notice are gone: prostitutes, runaways, high-risk teens. One night they exist, next morning they've vanished.
...
The only lead - a man who gets his kicks in the creepiest of ways: a twisted sadist with a brutal past. Kimberly Quincy, FBI Special Agent, knows she mustn't get caught in his web, but as the trail leads her closer, it seems she must become the prey if anyone else is to survive.

Warning - not for arachnophobes!!
I've now read a few of Lisa Gardner's books, and usually thoroughly enjoy them. This one is not quite as good as some of her others, but is still an enjoyable read. There are a couple of negatives - the bits from the killer's point of view are sometimes confusing as it's difficult to know when they're talking about the past or the present, and there is a little too much about the heroines relationship with her husband than I felt strictly necessary but there's enough there to keep those pages turning right to the end.

7/10