Portrait in Death is one of the best books of the series!
I love the In Death books. I,m about in the middle of the series now, and I have to admit they were becoming a little formulaic. (Not that there is anything wrong with this formula, but the last book Purity in Death was a little disappointing.)
However, this book was a wonderful change of pace. To be honest the mystery/case is not important to me in this book. There is some real character development in here and it's all about Roarke! He learns something new that changes his perception of his past and he doesn't handle it well. Like Eve says in the book - it was nice to see him "screw up now and again."