London, 1832...Dr. Dorian Ennis suspects that there is a 'mercy killer' killing patients on his hospital ward. And together, he and Lady Kathryn Jordan are determined to find the identity of the killer. Especially before the 'mercy killer' attempts to kill Kathryn's hospitalized father. But are these deaths truly merciful acts or are they of a more sinister nature? Along with Chief Inspector Harrison Mendham of the London Metropolitan Police, they search both for answers and the perpetrator. While investigating the baffling deaths, Dorian and Kathryn must also understand the perplexing whispers of their hearts.