The characters are interesting and the pace is good. The only reason I have not given it a five star rating is that I felt that the ending was a bit too happy and optimistic - out of character for some of the personalities in the story.
If you have read and enjoyed any of Minette Walters' books before, then you will not be disappointed with The Echo. If you have not read one of her books, this is a good first read. If you like The Echo, then try The Ice House and the Sculptress as well.
The book kept me reading, and fascinated. Jinx was a strongly drawn character and conflicted enough that you buy the fact that people have doubts about her innocence. The ending was unfortunately disappointing for being overly convoluted. It may not live up to the standard of The Scold's Bridal, but it's a well-written book.