As usual, Elizabeth George keeps me glued to the pages, and sporadically reaching for the dictionary (reredos?). 
 I find it interesting that some people gave this one fewer stars because they hated the way Lynley behaved toward Havers etc. HELLO? THEY AREN'T REAL PEOPLE, PEOPLE! The fact that we are disappointed in him sort of indicates EG's skill at characterization, wouldn't you say? 
 Anyhow, complex plot, and I didn't recall all the details from the first time I read it (I get her stuff ASAP and devour it, then re-read in a few years)so the plot twists were surprising...probably one good thing about getting older, I can re-read mysteries and still be surprised. 
 Although this one came after, it made me want to re-read Deception on His Mind, so . . .