After having fallen in love with A Spy in the House, I was looking forward to another adventure with Mary and James. While not quite reaching the level of enjoyment that I had with the first book, The Body at the Tower was still a great continuation of the series.Following a death at St. Stephen's Tower, The Agency assigns Mary to go undercover as an assistant at the construction site. Her goal is to get more information on the circumstances surrounding the accident. Posing as a lady's companion in Spy had its own difficulties, but Mary's new disguise requires her to chop off her hair, bind her breasts, take on a new voice and mannerisms, and even a new name! Mary Quinn becomes Mark Quinn, a twelve year old looking for work in the very male-dominated field. To add to its difficulty, disguising herself as a boy forces memories of Mary's past to resurface, allowing us a glimpse into her life before Miss Scrimshaw's Academy took her in.The mystery was interesting in its own way, but I didn't find it as gripping as its predecessor in Spy. I didn't feel as connected with these new characters like I did with the Thorolds, Michael, or even little Alfred Quigley! With a mysterious death, I expected a lot more emotional involvement.Mary and James did not disappoint one bit! With Mary disguised as Mark I knew there would be fun moments ahead. I'm glad, however, that the book didn't linger too long on any confusion between the two and quickly resumed their relationship. Their banter was as delightful as ever and their chemistry definitely went up a few notches. Anything else on these two together would consist of the caps lock key and many exclamation points so I'll just say: I LOVE THEM!The third book, The Traitor and the Tunnel, will be released in the U.K. this June and then in the U.S. and Canada in Spring 2012... There is NO WAY I'll be able to wait so I will somehow have to get my grubby little hands on it come June. I simply can't get enough of these characters!