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The Traitor in the Tunnel (The Agency #3)

4.07  ·  Rating Details  ·  4,509 Ratings  ·  491 Reviews
Queen Victoria has a problem: there's a thief at work in Buckingham Palace. The Agency - the secret all-female detective unit - assigns quick-witted Mary Quinn to the case. Posing as a palace maid and fending off the attentions of the Prince of Wales are challenging enough, but when the prince witnesses a murder, Mary's case becomes anything but petty.

Engineer and former
Hardcover, 373 pages
Published February 28th 2012 by Candlewick Press
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Katie I read the second one first and I enjoyed it, so I decided to go back and read the whole series in order. The books had hidden intricacies that way.…moreI read the second one first and I enjoyed it, so I decided to go back and read the whole series in order. The books had hidden intricacies that way. You can read the first two books in whichever order, but I would suggest doing it in order and for the third book, you will need some background.(less)
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Community Reviews

(showing 1-30 of 3,000)
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Feb 27, 2012 Nafiza rated it really liked it
Okay, this is going to be short because really there are only a few things I want to say about this novel.

1. I loved it. Really, really loved it.
Mary confronts the skeletons in her closet . The book takes a somber look at the people who sire us and how their mortality and morality affect us. This gives Mary new depths and she evolves much more as a character.
2. The kisses are smoking hot. My toes curled multiple times. It’s quite a feat since I wasn’t even the one being kissed.
3. Lee’s portr
I have, honestly, never come across a couple in a book more adorable and perfect together than Mary and James.

Y.S. Lee, THANK YOU, for giving us these two, especially James!

P.S - Queen Victoria is SUCH a badass in this book! :D
Jan 01, 2012 Radha rated it it was amazing
This book was absolutely wonderful! There was sooo much you didn't expect. Leave it up to Y.S. Lee to make it a suspenceful yet funny Victorian novel. She put it the right amount of detail in the book. Enough to let you get the main idea of where the characters are and what they are doing, but not so much to bore you to death. It was so good I couldn't put it down until 2:43 am (I could have stayed up longer- but unfortunatly, I had school in a few hours). Something that I enjoy in all of Y.S. L ...more
Feb 20, 2015 Tracey rated it really liked it  ·  review of another edition
This is a young adult novel I was granted access to through Netgalley – with thanks to them. It is the third book in a series, but the only problem with that is that I want very much to read the first books and don't have them yet. (This also appears to be called The Traitor and the Tunnel - for the original Canadian edition, perhaps?)

Mary Quinn is undercover. She is twenty years old, and a part of an extraordinary intelligence agency, and posing as a maid in Queen Victoria's household. And I mu
Sep 27, 2012 Amy rated it did not like it
This review has been hidden because it contains spoilers. To view it, click here.
Feb 27, 2012 Heidi rated it liked it
Three and a half stars: A book with a little something for everyone: mystery, romance, history and thrills.

Mary Quinn is working undercover on her first real assignment. She is posing as a parlor maid in Buckingham Palace. Mary in actuality is a secret agent working for an agency that employs all women spies/ detectives. Mary is sent to the palace to try and track down a thief. Someone is stealing small artifacts from the palace. While performing her daily duties, Mary unwittingly stumbles acro
Apr 04, 2012 TheBookSmugglers rated it really liked it
Originally Reviewed on The Book Smugglers:

**WARNING: THIS REVIEW CONTAINS SPOILERS FOR THE FIRST TWO BOOKS IN THE AGENCY SERIES. If you have not read books 1 & 2, and you wish to stay unspoiled, look away now! You have been warned.**

After the events of The Body at the Tower, Mary Quinn finds herself a full graduate of the Academy and an official operative of The Agency. Her first official assignment, however, is the somewhat disappointing mission to d
Dec 13, 2015 Thenia rated it really liked it
Shelves: mystery, series, 2015
Mary is undercover posing as a maid in Buckingham Palace, trying to find a thief. Her assignment isn't going as well as she'd like and there is tension in the Agency complicating matters further.

To make matters worse, James Easton is back unexpectedly and Mary suspects that (view spoiler) is her long lost father.

My life sucks so much right now

Conspiracies, an immature prince and not nearly enough support for Mary, who is struggling to complete her
May 15, 2015 Hannah rated it really liked it
The Traitor in the Tunnel is by far the best installment of The Agency series; with the character introductions and early foundation cases out of the way, Mary finally (literally) moves onwards and upwards - in the world and as an agent of The Agency - faces her past and hitherto mysterious Chinese heritage and really makes some serious relationship progress with former beau (of sorts) James Easton. Hurrah.

Nothing could have prepared me for how much I enjoyed the change of scenery - we depart fr
Sep 20, 2011 Dulcinea rated it it was amazing
Recommends it for: EVERYONE!!!
You should have seen my face when this book came in the mail, it was probably Facebook worthy!!
When I first started reading the book I was starting to feel a little let down, so I put it down and thought, what was missing? It was only then that I realized that my anticipation for this book had been building up for over a year, so I had envisioned some almighty holy grail-esque shining novel in which I would hear a choir singing whenever I turned a page. And that I shouldn't start the book think
Jennifer (FFT Reviews)
Oh my god!! It is rare that I find a series that sucks me in the way that Y.S. Lee's Agency series has. It is even rarer when every book in a series gets a 5-Star ranking from me, but that is what happened with these historical mysteries.

For those of you who are unaware, The Agency is a young adult historical mystery series that tells of the adventures of Mary Quinn. Mary is a former street thief who was saved from execution/transportation and given the opportunity to be educated at a charity sc
Rating: 2.5/5

I think it's been too long since I picked up this series because although I literally inhaled this book since I borrowed it from the library yesterday, I didn't enjoy it as much. First, anything where royalty is involved just bores me; their generosity, their love for their people, ugh it chafes at me and I don't enjoy all the prostrations that it involves. Second, there wasn't much high tension in the story, for me at least. The resolution to the mystery kinda whimpered out at the
Allison (The Allure of Books)
Y’all, historical mysteries are one of my favorite genres. The Agency series by Y.S. Lee definitely delivers – I love these books! The Traitor in the Tunnel is easily the best yet.

Mary Quinn, working for the shadowy female Agency, is undercover at Queen Victoria’s palace as a maid. Some petty thefts have been going on, and Mary is hoping to figure out who is behind them. Then things get complicated. Extremely complicated. The prince witnesses a murder – and the accused murderer just might be som
Jan 27, 2012 Krystle rated it really liked it
Okay, this review will be short but let me just some this book up first in three words: fun, addicting, and fabulous.

I absolutely loved the new setting in this one. We went from the absolute lows of Victorian society (the poor and the hardworking who live in shoddy housing and unhygienic places) to the utmost of highs (the ruling royalty). It was so fun seeing how she portrayed everyone from the well-meaning, sharp, but also caring queen to the ineffective, cowardly, and lazy ponce of a prince.
jillian nessie
Aug 22, 2013 jillian nessie rated it really liked it
This is very likely the best of The Agency series so far. Certainly better than the second, which wasn't quite so good as the first, though it's a bit harder to remember that one, as it's been a good year or more since I read it (but I do have some vague recollections of a mystery gone horribly awry). I enjoyed the writing, the story was excellent, and I have a notion that the setting was perhaps a bit better done the others. Also, the addition of Mary's father didn't go amuck.

So overall, quite
Krista (CubicleBlindness Reviews)
So far this is my favorite book in the series. Of course this is the natural thing for most series because the characters and the world setting is mostly done in the first book. So we already have the established characters and just get to focus more on the plot of the story, which is a new mystery for Mary to solve.
This time the characters involved may be closer to Mary than she would have ever thought. It not only develops a story within the Royal court at Buckingham Palace, but one that leads
Mar 12, 2012 kari rated it it was amazing
Shelves: ya, 5-star, 2012
This series continues to be entertaining with well-developed characters and excellent plots. The mystery in this one, the thefts from the palace and the lurking about in the tunnels, is somewhat secondary to Mary's personal mysteries and actions. Not that that is bad, it's just that solving the mystery isn't central to the story, although it is the central story.
Without going into much detail, I loved how this one ended. I would have liked Mary to get to know more about her heritage and why thin
colleen the fabulous fabulaphile

A lot is happening for Mary, both personally and professionally, in this latest installment. It opens with Mary on her first assignment as a fully trained Agent, even though the case - petty thefts at the palace - is a bit humdrum after the excitement of previous cases.

But then, while she's at the palace, this go awry for the Prince Bertie, and the case touches on Mary's on past. She also is left in a position of having to decide just how far she'll go to compromise herself to get information
Carla *Jen7waters*
Ah, Ying…you are amazing. If I could give you a big hug right now, I would, I would also look like a crazy person/creepy stalker, but it would be worth it, because you just wrote the most PERFECT third book in a series of this kind, and I'm so happy I can finally give my beloved Mary Quinn a 5 star rating! SO HAPPY!

In this third book, Mary is working as a maid at the Buckingham Palace, undercover, of course, for the Agency. Some objects have gone missing, suggesting there's a thief among the sta
Dec 26, 2014 Ifmarybooks rated it it was amazing
I think I can say it now : i'm in love with The Agency series and it might be one of my favorite series ! This third book was even better than the two first books !!!! I couldn't put it down and I read it in one sitting.
Once again I was so happy to be back in this world of spies, this victorian era, london...
This time this is completely different. At the beginning of the book Mary is already in a mission so we're right from the beginning into the action. And this is quite extraordinary there i
Steph Su
Feb 12, 2012 Steph Su rated it liked it
Shelves: poc
Whenever a new Agency novel by Y. S. Lee comes out, I always try to resist the temptation to devour it immediately, knowing that I will have to wait a while until the next book. I succeeded in resisting for all of approximately two weeks after I was approved for it on NetGalley. While, in my opinion, THE TRAITOR IN THE TUNNEL didn’t quite live up to how much I loved the first two Agency books, it is still a satisfying return to Lee’s Victorian London.

My biggest frustration with TRAITOR was that
Jul 13, 2012 SusannaF rated it really liked it
This installment of YS Lee's excellent historical romance-mysteries is, in my opinion not quite as tightly plotted as the last two, but I still thoroughly enjoyed it. If I could, it would get 3.5 stars. Mary is, as always, intelligent, courageous and impulsive. Her thoughts always take more of the center stage than the actual mystery, and in this one, the mysteries are numerous and a bit confusing. They don't end up being related, which was disappointing. And as for James...well, at the beginnin ...more
Margaret H.
This book made me laugh out loud, it made me flip pages frantically to find out WHAT WOULD HAPPEN NEXT, it made me sigh soulfully over perfect romantic scenes, it made me cry, it was-- in short-- a Mary Quinn book. The mystery here is a little less tightly-plotted than the others have been, as the two disparate threads Mary is investigating never coalesce into a larger, joined problem and the payoff in each-- since neither has been the specific focus-- is therefore lessened. But Mary's emotional ...more
I loved this book! Mary finally confronts the ghosts of her past...and she seems to be the better for it. She also has to make some major decisions about where her life is going n this book, and I really hope that she sticks with what she chose. James is so confusing. I mean in the first part of the book, I really hated him for what he did to Mary. But by the end, I was totally back on his side again. The mystery, as usual with Y.S. Lee books was great. I never suspected who was stealing the tri ...more
Anne Hamilton
Nov 09, 2015 Anne Hamilton rated it really liked it  ·  review of another edition
Shelves: ya
A great wrap-up to Agency 1: A Spy in the House and Agency 2: The Body at the Tower. I was a bit concerned that the ongoing romance between Mary Quinn and James Easton was going to be drawn out interminably but it was brought to a satisfying resolution.

The story was intriguing, weaving together several different strands and forcing Mary to confront the demons of her past life. The plot was marred by just a wee bit too much melodrama when it came to exposing the traitor who wanted to kill Queen V
Jessie Burroughs
Sep 24, 2015 Jessie Burroughs rated it it was amazing
Spoiler Alert!! No summary here, only review.

Overall, I preferred this book by far over the other two. What I liked best was James appearance in this novel. I found him more and more endearing as the series went on. Mary is brilliant in this novel too, and I was glad she was more confident in this installment. Her growing maturity was a beautiful thing to witness. I was glad to see her think for herself, follow her instincts, her smarts, and for once, her heart. I really liked that her emotions
5 stars

Nice to see Mary as a full-fledged agent. Glad she was able to see her father for one last time. Also glad to see James again. Wonder if Mary will stay with Anne or go to work with Felicity. Finally, glad that Mary and James confessed their feelings for each other. Can't wait to read Rivals in the City!!!
Ramya Rajesh
Nov 05, 2014 Ramya Rajesh rated it it was amazing
The Traitor in the Tunnel is an AMAZING book by Y.S. Lee, a trilogy to the Mary Quinn series, that's situated in Victorian London. The book has an intricate plot about Mary Quinn,an orphan who has had an interesting past from a distinct family tree and a creative criminal record. Mary Quinn somehow survived her death sentence, through a kind benefactor and now has blossomed to do something big. In this book, she serves as chambermaid in Buckingham Palace, to investigate where some of the Queen's ...more
Nov 07, 2015 Connie rated it it was amazing
Yea..Yea...Yea....I know I don't often give 5 stars to a book...and certainly not one so light and fluffy such as this....but damnit to hell....I so enjoyed this one! I've fallen completely in love with Mary and James. In this installment of the series we find Mary working at the Royal Palace as a maid. She is attempting to uncover the mystery of some stolen items. However, nothing is ever so simple with Mary. She soon finds herself involved in murder...and that's the simplest problem she is try ...more
Aug 16, 2015 Amy rated it really liked it
I feel like on a large scale, I enjoyed this book. The plot was mostly tidy again, and the way Mary's family/background was addressed was weaved well into the other plot. I was glad simply to have her background addressed somewhat, and not just pushed away. In addition I was happy to see the progress in the romance in this book, I was worried it would repeat the previous two, and have them conveniently break apart at the end yet again.

However the book was somewhat spoiled for me by the scenes in
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Y S Lee was born in Singapore, raised in Vancouver and Toronto, and lived for a spell in England. As she completed her PhD in Victorian literature and culture, she began to research a story about a girl detective in 1850s London. The result was her debut novel, The Agency: A Spy in the House. This won the Canadian Children’s Book Centre’s inaugural John Spray Mystery Award in 2011.

The Agency quart
More about Y.S. Lee...

Other Books in the Series

The Agency (4 books)
  • A Spy in the House (The Agency, #1)
  • The Body at the Tower (The Agency, #2)
  • Rivals in the City (The Agency, #4)

Share This Book

“Stop shining your lantern in my face."
"It's such a lovely face.”
“He smiled. "I suppose I thought we'd have a madly impractical, terrifyingly modern sort of marriage. One based on love. Not to mention dangerous undertakings and hair's-breadth escapes from burning buildings, high ledges and exploding sewers."

"And bickering."

"Always that, yes."

"Assuming I want to marry at all."

"True. I know of no good way of forcing you to do anything."

"And you're mad enough to think it could work - one day?"

He cupped her face in his hands. His smile was so brilliant it seemed to illuminate the room. "I think it would be heaven."

She trembled, then. "You have a very strange idea of heaven."

"Kiss me and see.”
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