Waiting on Wednesday is a weekly event hosted by Jill at Breaking the Spine spotlighting upcoming releases we're eagerly anticipating.

Release Date: February 28, 2012
Publisher: Candlewick Press

Summary (from Goodreads):

Queen Victoria has a little problem: there’s a petty thief at work in Buckingham Palace. Mary Quinn takes the simple case, going undercover as a domestic servant. But before long, a scandal threatens to tear apart the Royal Family.

One of the Prince of Wales’s irresponsible young friends is killed in disgraceful circumstances. Should the Queen hush things up or allow justice to take its course? Mary’s interest in this private matter soon becomes deeply personal: the killer, a drug-addicted Chinese sailor, shares a name with her long-lost father.

Meanwhile, James Easton’s engineering firm is repairing the sewers beneath Buckingham Palace. Trouble is, there’s a tunnel that’s not on the plans. Its purpose is unclear. But it seems to be very much in use.

These overlapping puzzles offer a perfect opportunity for Mary and James to work together again… if they can still trust one another. This is Mary’s most personal case yet and she has everything to lose.

It has been a long wait for North Americans to read The Traitor in the Tunnel, the third novel in Canadian author Y.S. Lee's The Agency series, but I have a feeling that it will be absolutely worth it! I really enjoyed reading the previous novels, and I can't wait to see what adventures and danger awaits Mary in her latest investigation. And it seems like we'll be seeing more of James Easton too!

If you're looking for well-written historical fictional novels which whisk you away to the Victorian era and include a touch of mystery, then I'd definitely recommend checking out the series! The first book is called A Spy in the House.