I enjoyed this mix of intrigue, mystery, long ago secrets and murder. Lots of threads for Delaney to untangle, from an unfortunate incident 50 years ago involving Edwin and his university friends to a murder of a William Wallace reenactor. I loved the sights and sounds of Edinburgh and old castles, it was just like being there. The plot kept a decent pace, and there was a lot for Delaney to figure out and the exciting ending left me with raised eyebrows. With all of the red herrings and plot twists, There were a few dropped/unexplained plot threads that I found myself thinking about after I finished the book. Who was the dead guy on the boat and how come nothing could be found about him other than the passport? Weird. And whatever happened to the letter? And what was the whole thing with the shot glasses? I guess I'll never know. But seriously, if Edwin had come clean about the whole thing from the beginning, we never would've had a whole book to enjoy.