Rivalry and Ruination by Catherine Bilson

Newly wed and newly wary, Elizabeth and Darcy embark on their life together under the shadow of secrets. With Lydia and her secret safely hidden away in Leicester, the couple journeys on to Pemberley, their relationship still tender and uncertain. Elizabeth fears Darcy married her out of obligation rather than love, while Darcy worries she accepted him only to save her family from ruin. As they navigate these misunderstandings, Elizabeth’s gentle influence brings warmth to Pemberley, drawing Georgiana out of her shell and gradually melting the last of Darcy’s reserve.
Just as they begin to find genuine happiness, Charles Bingley and his sister Caroline arrive unexpectedly at Pemberley. Caroline’s bitter resentment of Elizabeth’s marriage threatens to expose Lydia’s secret, while Bingley’s determination to renew his courtship of Jane creates complications the newlyweds can ill afford, and Darcy and Elizabeth must return to Netherfield to manage the consequences. When Colonel Fitzwilliam joins their party at Netherfield and begins paying marked attention to Jane Bennet, the stage is set for a dangerous rivalry.
During a magnificent ball at Netherfield, tensions come to the breaking point. The following morning, a body is discovered at the foot of the grand staircase. What first appears to be a tragic accident soon reveals itself as something far more sinister, and the evidence points to someone within their intimate circle. As suspicion falls upon those closest to them, Elizabeth and Darcy must once again navigate the treacherous waters of scandal while protecting those they love.