Mr. and Mrs. Darcy are looking forward to a relaxing stay with dear friends when their carriage is hailed by a damsel-in-distress outside of the village of Highbury. When the Darcys leave the carriage to aid the woman, their servants are knocked unconscious and their possessions, along with precious family heirlooms are stolen. When they turn to confront the woman, she has vanished into the night. The Darcys go in search of the town magistrate, who is having a difficult evening of his own. Mr. and Mrs. Knightly (formerly Miss Emma Woodhouse, the heroine of Jane Austen's Emma) are hosting a party to celebrate the marriage of their friends, Mr. Frank Churchill and Miss Jane Fairfax. During dinner, Mr. Edgar Churchill, uncle and adoptive father of the groom, falls suddenly ill and dies. The cause of death: poison. When the quick-witted Darcys and the well respected Knightleys team up to investigate the crimes, they discover that the robbery and Edgar Churchill's death may be connected. Together they must work to quickly locate the source of the poison and the murderer's motive - before the killer can strike again.