January 1803. Lincolnshire.
When the formidable Sir Henry Fitzwilliam is found dead in his bed, whispering “no, no, no” his final words, suspicion soon blankets Harebell House. The cause? Poison. And not just any — arsphenamine, a compound not yet widely known, intended to treat a shameful disease and now repurposed for murder.

Dr. Arjun Arkwright, a reclusive physician still haunted by the death of his wife, is summoned by the local constable not for his bedside manner, but for his keen deductive mind. He is soon joined by Ophelia Pearson, an eccentric chemist and fiercely intelligent heiress, who identifies the poison and becomes entangled in both the case and Arkwright’s cautious life.

• (00:00:00) - The Words of Sir Henry Fitzwilliam
• (00:00:47) - The Death of Sir Henry Fitzwilliam
• (00:06:44) - The Death of Sir Henry Fitzwilliam
• (00:12:16) - The Life of Henry Fitzwilliam, jr.
• (00:15:50) - Inspector Thomas Baines
• (00:21:04) - THE HOUSE OF QUICK MOTIVES
• (00:25:42) - The Confession of Jasper Montgomery
• (00:27:42) - The Death of Sir Henry Fitzwilliam
• (00:29:32) - The Chemist on Grange Road
• (00:36:04) - The Question of Who Had It
• (00:37:23) - Whispered Agendas
• (00:41:35) - An Unwelcome Return to Harebell House
• (00:47:04) - Arkrite and Ophelia search the study where Sir Henry died
• (00:48:56) - Henry Fitzwilliam Jr
• (00:50:55) - Henry Fitzwilliam's first visit since his father
• (00:54:07) - A Pattern of Intimacy
• (00:55:22) - Dr. Montgomery on Sir Henry Fitzwilliam's Death
• (00:59:03) - The Death of Sir Henry Cavendish
• (01:00:52) - Arkrite and Ophelia in the Hall
• (01:01:26) - Black Hen Inn
• (01:02:56) - The Solving of Sir Henry's Death
• (01:06:58) - The Investigation into Sir Henry Fitzwilliam's Death
• (01:13:36) - The Letter from Sir Henry Fitzwilliam
• (01:20:00) - Henry Fitzwilliam Jnr.
• (01:25:12) - Cavendish
• (01:31:35) - The Housekeeper's Parlour
• (01:36:48) - The Voice of the Court
• (01:41:11) - The Ghost of Roark's Drift
• (01:46:42) - Teaching at the Pearson Cottage
• (01:51:54) - Arkrite and Ophelia
• (01:53:09) - Fire Inside the Pearson Cottage
• (01:57:51) - Henry Fitzwilliam's syphilis symptoms
• (02:04:10) - The letter from Dr. James Alcott, Royal Infirmary
• (02:07:56) - Henry Fitzwilliam
• (02:12:23) - Arkwright's Last Words
• (02:12:48) - Beatrice Fitzwilliam in the Harebell House
• (02:17:50) - The Murder of Sir Henry Fitzwilliam
• (02:22:01) - A Portrait of Emily Fitzwilliam
• (02:23:53) - What Remains of Jasper Montgomery