Dashiel Matthews, Viscount Carrington, is brilliant at solving puzzles. An asset in his work with the Young Corinthians, he has learned to hide his wits behind an amiable facade. Dash has a photographic memory and never forgets anything he reads.

He and some friends band together outside their work with the Young Corinthians to solve the murder of a woman they all loved over 20 years ago. Lady Afton was brutally murdered and her death has impacted her daughter and 4 young men.

Now, they have resolved to reopen the investigation into Lady Afton's death. Just when he most needs his wits about him, Dash has to deal with the arrival of Miss Elena Barnes.

Miss Barnes is a beautiful young woman who isn't afraid to use her brain. Her season was a disaster and she remains at home with her father. When Dash's father dies, he leaves his entire library of rare books to Mr. Barnes, an old friend. Elena travels to London to catalog and pack the books for her father, since his gout is so painful.

She doesn't expect to be attracted to Dash and to be chaperoned by his aunt, who is determined to find Elena a husband. At first, Elena is put off by Dash's game of stupid amiability. As she grows to know more about him, she finds herself attracted and intrigued.

Together, Elena and Dash will seek the identity of the killer known as the Bishop. The danger will draw them together in ways that they don't expect.

The third in the series, Ms. Sloan has done a good job with drawing the reader into the life of the Young Corinthians. With likable characters and a well-plotted story, it was hard to put this down. While the identity of the Bishop is exposed, the reader will learn that the conspiracy goes deeper than anyone expected.