# Silverdale — The Case with Nine Solutions character guide > Silverdale in The Case with Nine Solutions by J. J. Connington. **Role:** supporting **Also known as:** Dr. Silverdale **First appearance:** 0001-ii-the-house-next-door ## Snapshot A research chemist whose marriage has quietly collapsed, leaving him pursuing Avice Deepcar while his wife Yvonne flaunts a younger man. ## Who they are Silverdale is an alkaloid specialist at the Institute, respected in his field but privately miserable in a marriage where husband and wife have agreed to take separate roads. He has turned toward Avice Deepcar while Yvonne parades young Hassendean about town, and the scandal gives him motive for a divorce he probably cannot get. His professional expertise in the very poisons under investigation makes him both a resource and a suspect as the case unfolds. ## Relationships ### [Inspector Flamborough](https://www.betterreads.dev/discover/the_case_with_nine_solutions_se/characters/inspector_flamborough) _professional_ Flamborough interacts with Silverdale as a person of interest or witness in the case, maintaining a formal investigative dynamic. ### [Sir Clinton Driffield](https://www.betterreads.dev/discover/the_case_with_nine_solutions_se/characters/sir_clinton_driffield) _rivalry_ Silverdale and Driffield are often at odds, with Silverdale possibly being a suspect or antagonist in the investigation. ### [Dr. Trevor Markfield](https://www.betterreads.dev/discover/the_case_with_nine_solutions_se/characters/dr_trevor_markfield) _professional_ Markfield and Silverdale interact in a clinical or investigative context, with Markfield possibly treating or examining Silverdale. ### [Avice Deepcar](https://www.betterreads.dev/discover/the_case_with_nine_solutions_se/characters/avice_deepcar) _family_ Avice Deepcar and Silverdale are likely related, possibly as siblings or through marriage, given their frequent and close interactions. ### [Dr. Ringwood](https://www.betterreads.dev/discover/the_case_with_nine_solutions_se/characters/dr_ringwood) _professional_ Dr. Ringwood likely provides medical care or assessment to Silverdale, creating a doctor-patient dynamic. ### [Inspector Flamborough](https://www.betterreads.dev/discover/the_case_with_nine_solutions_se/characters/inspector_flamborough) _professional_ Flamborough interacts with Silverdale as a person of interest or witness in the case, maintaining a formal investigative dynamic. ### [Sir Clinton Driffield](https://www.betterreads.dev/discover/the_case_with_nine_solutions_se/characters/sir_clinton_driffield) _rivalry_ Silverdale and Driffield are often at odds, with Silverdale possibly being a suspect or antagonist in the investigation. ### [Dr. Trevor Markfield](https://www.betterreads.dev/discover/the_case_with_nine_solutions_se/characters/dr_trevor_markfield) _professional_ Markfield and Silverdale interact in a clinical or investigative context, with Markfield possibly treating or examining Silverdale. ### [Dr. Ringwood](https://www.betterreads.dev/discover/the_case_with_nine_solutions_se/characters/dr_ringwood) _professional_ Dr. Ringwood likely provides medical care or assessment to Silverdale, creating a doctor-patient dynamic. ### [Inspector Flamborough](https://www.betterreads.dev/discover/the_case_with_nine_solutions_se/characters/inspector_flamborough) _professional_ Flamborough interacts with Silverdale as a person of interest or witness in the case, maintaining a formal investigative dynamic. ### [Avice Deepcar](https://www.betterreads.dev/discover/the_case_with_nine_solutions_se/characters/avice_deepcar) _family_ Avice Deepcar and Silverdale are likely related, possibly as siblings or through marriage, given their frequent and close interactions. ### [Avice Deepcar](https://www.betterreads.dev/discover/the_case_with_nine_solutions_se/characters/avice_deepcar) _family_ Avice Deepcar and Silverdale are likely related, possibly as siblings or through marriage, given their frequent and close interactions. ## In the story ### [II: The House Next Door](https://www.betterreads.dev/discover/the_case_with_nine_solutions_se/chapters/ii-the-house-next-door) Dr. Silverdale, the husband of Yvonne, who is often out and whose whereabouts are uncertain. ### [VI: The Nine Possible Solutions](https://www.betterreads.dev/discover/the_case_with_nine_solutions_se/chapters/vi-the-nine-possible-solutions) Reported to have returned home and gone to the Croft-Thornton Institute, where Sir Clinton and Flamborough plan to interview him. ### [VII: The Fly in the Amber](https://www.betterreads.dev/discover/the_case_with_nine_solutions_se/chapters/vii-the-fly-in-the-amber) Mentioned as Dr. Markfield's chief and an alkaloid specialist; the cigarette-holder was made for him; he was seen dining with Avice Deepcar. ### [VIII: The Hassendean Journal](https://www.betterreads.dev/discover/the_case_with_nine_solutions_se/chapters/viii-the-hassendean-journal) Caught in a lie about working all night at the Croft-Thornton; no light was seen in his room. ### [IX: The Creditor](https://www.betterreads.dev/discover/the_case_with_nine_solutions_se/chapters/ix-the-creditor) Yvonne's husband; Renard notes that Silverdale did not mention the inheritance to Flamborough. ### [XII: The Silverdale Wills](https://www.betterreads.dev/discover/the_case_with_nine_solutions_se/chapters/xii-the-silverdale-wills) Discussed as a prime suspect: he gains £12,000 by his wife's death and is free to marry Avice Deepcar. ### [XIII: The Murder of the Informer](https://www.betterreads.dev/discover/the_case_with_nine_solutions_se/chapters/xiii-the-murder-of-the-informer) Prime suspect; Flamborough theorizes he may have killed Whalley to prevent him from testifying. ### [XIV: The Jacket](https://www.betterreads.dev/discover/the_case_with_nine_solutions_se/chapters/xiv-the-jacket) Questioned about his alibi, lost cigarette holder, banjo playing, and the torn, bloodstained laboratory coat; cannot explain the coat's condition and appears nervous. ### [XV: Sir Clinton’s Double](https://www.betterreads.dev/discover/the_case_with_nine_solutions_se/chapters/xv-sir-clinton-s-double) Arrested on suspicion of the bungalow murder; his alibi with Avice is questioned. ### [XVI: Written Evidence](https://www.betterreads.dev/discover/the_case_with_nine_solutions_se/chapters/xvi-written-evidence) Implicated as the author of the letter discussing a plot involving hyoscine and Hassendean. ### [XVIII: The Connecting Thread](https://www.betterreads.dev/discover/the_case_with_nine_solutions_se/chapters/xviii-the-connecting-thread) Framed by Markfield for the murder; his lab coat and alibi were manipulated. ### [Excerpts from Sir Clinton’s Notebook](https://www.betterreads.dev/discover/the_case_with_nine_solutions_se/chapters/xix-excerpts-from-sir-clinton-s-notebook) Suspect; his lie about working late at the Croft-Thornton Institute is exposed; his cigarette-holder found at bungalow. ## Links - HTML: https://www.betterreads.dev/discover/the_case_with_nine_solutions_se/characters/silverdale - Book: https://www.betterreads.dev/discover/the_case_with_nine_solutions_se - All characters: https://www.betterreads.dev/discover/the_case_with_nine_solutions_se/characters