I read this book before my Goodreads.com days. The review below comes from PageADay Book Lover's Calendar for March 25, 2013. Having famous 19th century writers solve the mystery was an interesting feature of the book, but it doesn't qualify as historical fiction in my opinion.
Excellent fun for fans of Caleb Carr’s The Alienist, this historical crime thriller investigates a series of murders in 1865 Boston, all inspired by scenes in Dante’s Inferno. Of course a few Dante scholars would be required to follow the clues: Enter a distinguished group of characters, including the estimable Henry Wadsworth Longfellow and Oliver Wendell Holmes, among others. This debut novel combines clever suspense with rewarding historical detail.THE DANTE CLUB
, by Matthew Pearl (2003; Ballantine, 2006)