Darcy and Elizabeth - A Promise Kept

Five years after his disastrous proposal at Kent, Fitzwilliam Darcy receives a letter from Charles Bingley regarding a promise made when their friendship ended. Should Darcy keep the promise, it will throw him into the company of the one woman he has struggled for years to forget—Elizabeth Bennet. 

Having just entered a secret agreement with Lady Markham, will Darcy put his future in jeopardy by stepping in to help Bingley? Has time and distance helped him overcome his regard for Elizabeth, or will he fall as madly in love with her as before?

Is true love to be found in a promise kept?