Enjoyable. Not my favourite Mary Russell book, but not bad. I thought the long drawn out amnesia-raddled beginning was difficult to pull off without becoming too cartoony but the author managed it nicely and I enjoyed the Moroccan setting. I got confused on a few points of plot, but mostly I was just along for a fun ride with Mary. If anything there was too much of Sherlock, though I do like the not-completely-infallible version of him in these stories.