# Dr. Thorndyke — The D’Arblay Mystery character guide > Dr. Thorndyke in The D’Arblay Mystery by R. Austin Freeman. **Role:** major **Also known as:** Dr. John Thorndyke, Thorndyke, John Thorndyke **First appearance:** 0000-i-the-pool-in-the-wood ## Snapshot Medical jurist and detective who reads crime scenes like case notes, quietly outthinking both criminals and the police who underestimate him. ## Who they are Thorndyke moves through the D'Arblay affair with characteristic reticence, admitting Dr. Gray into his confidence while evading questions he isn't ready to answer. He is a man you cannot take liberties with, as Marion observes, yet he extends guarded kindness to those endangered by the case. His habit of testing witnesses on identifications he cannot yet substantiate, and his willingness to arm himself and Gray against a killer, show a mind already several moves ahead of the investigation. ## Relationships ### [Marion D'Arblay](https://www.betterreads.dev/discover/the_d_arblay_mystery_se/characters/marion_d_arblay) _professional_ Dr. Thorndyke is the legal and investigative advisor to Marion D'Arblay, guiding her through a complex mystery. ### [Detective-Superintendent Miller](https://www.betterreads.dev/discover/the_d_arblay_mystery_se/characters/detective_superintendent_miller) _professional_ Miller and Thorndyke are professional colleagues, often cooperating but with occasional rivalry over investigative methods. ### [Polton](https://www.betterreads.dev/discover/the_d_arblay_mystery_se/characters/polton) _professional_ Polton is Dr. Thorndyke's loyal laboratory assistant and factotum, aiding in forensic work. ### [Stephen Gray](https://www.betterreads.dev/discover/the_d_arblay_mystery_se/characters/stephen_gray) _professional_ Dr. Thorndyke investigates Stephen Gray as a person of interest in the case. ### [Mr. Bendelow](https://www.betterreads.dev/discover/the_d_arblay_mystery_se/characters/mr_bendelow) _professional_ Thorndyke and Bendelow interact as legal and financial professionals involved in the D'Arblay estate. ### [Jonathan Crile](https://www.betterreads.dev/discover/the_d_arblay_mystery_se/characters/jonathan_crile) _rivalry_ Thorndyke views Crile as a key antagonist and suspect, leading to a tense adversarial dynamic. ### [Mr. Morris](https://www.betterreads.dev/discover/the_d_arblay_mystery_se/characters/mr_morris) _professional_ Thorndyke interviews Mr. Morris as a witness or person connected to the case. ### [Wilson](https://www.betterreads.dev/discover/the_d_arblay_mystery_se/characters/wilson) _professional_ Wilson is likely a police officer or assistant who works with Dr. Thorndyke on the investigation. ### [Dr. Usher](https://www.betterreads.dev/discover/the_d_arblay_mystery_se/characters/dr_usher) _professional_ Thorndyke and Dr. Usher consult as fellow medical or scientific experts on the case. ### [Marion D'Arblay](https://www.betterreads.dev/discover/the_d_arblay_mystery_se/characters/marion_d_arblay) _professional_ Dr. Thorndyke is the legal and investigative advisor to Marion D'Arblay, guiding her through a complex mystery. ### [Stephen Gray](https://www.betterreads.dev/discover/the_d_arblay_mystery_se/characters/stephen_gray) _professional_ Dr. Thorndyke investigates Stephen Gray as a person of interest in the case. ### [Detective-Superintendent Miller](https://www.betterreads.dev/discover/the_d_arblay_mystery_se/characters/detective_superintendent_miller) _professional_ Miller and Thorndyke are professional colleagues, often cooperating but with occasional rivalry over investigative methods. ## In the story ### [A Conference with Dr. Thorndyke](https://www.betterreads.dev/discover/the_d_arblay_mystery_se/chapters/ii-a-conference-with-dr-thorndyke) Renowned medico-legal expert and former teacher of Gray; agrees to investigate the case and arranges to attend the postmortem and inquest. ### [Inspector Follett’s Discovery](https://www.betterreads.dev/discover/the_d_arblay_mystery_se/chapters/v-inspector-follett-s-discovery) Mentioned as the expert Gray hopes to consult; Gray sends him wax impressions of the coin. ### [Enlarging Thorndyke's Knowledge](https://www.betterreads.dev/discover/the_d_arblay_mystery_se/chapters/vii-enlarging-thorndyke-s-knowledge) Analyzes the coin's significance, connects it to D'Arblay's sculpting work, and strategizes about keeping the investigation secret. ### [A Strange Misadventure](https://www.betterreads.dev/discover/the_d_arblay_mystery_se/chapters/ix-a-strange-misadventure) Reveals the coin is an electrotype and proposes a motive for D'Arblay's murder. ### [Marion's Peril](https://www.betterreads.dev/discover/the_d_arblay_mystery_se/chapters/x-marion-s-peril) Mentioned as the person Stephen intends to consult about the attack. ### [XI: Arms and the Man](https://www.betterreads.dev/discover/the_d_arblay_mystery_se/chapters/xi-arms-and-the-man) Analyzes the mould fragment, confirms the link to the guinea, and devises a plan to protect Marion and trap the murderer. ### [A Dramatic Discovery](https://www.betterreads.dev/discover/the_d_arblay_mystery_se/chapters/xii-a-dramatic-discovery) Visits the studio, systematically examines casts, discovers the dusty mask, and deduces its significance. ### [A Narrow Escape](https://www.betterreads.dev/discover/the_d_arblay_mystery_se/chapters/xiii-a-narrow-escape) Listens to Gray's report, shares his case dossier and a photograph, and discusses inferences about the attacker. ### [The Haunted Man](https://www.betterreads.dev/discover/the_d_arblay_mystery_se/chapters/xiv-the-haunted-man) Sends a message about the CID visit and provides the photograph; his investigations are progressing. ### [Thorndyke Proposes a New Move](https://www.betterreads.dev/discover/the_d_arblay_mystery_se/chapters/xv-thorndyke-proposes-a-new-move) Proposes exhumation of Crile's body to settle identity doubts; keeps his hypothesis and further investigation plans confidential from the police for now. ### [A Surprise for the Superintendent](https://www.betterreads.dev/discover/the_d_arblay_mystery_se/chapters/xvi-a-surprise-for-the-superintendent) Leads the exhumation, reveals he suspected the coffin was empty, and shows Gray the garden gate to the canal. ### [A Chapter of Surprises](https://www.betterreads.dev/discover/the_d_arblay_mystery_se/chapters/xvii-a-chapter-of-surprises) Orchestrates the identification test with the waxwork; reveals the solution is obvious but withholds full explanation until after the arrest. ### [The Last Act](https://www.betterreads.dev/discover/the_d_arblay_mystery_se/chapters/xviii-the-last-act) Arranges the arrest and later reveals the suspect's disguise; provides medical aid. ### [Thorndyke Disentangles the Threads](https://www.betterreads.dev/discover/the_d_arblay_mystery_se/chapters/xix-thorndyke-disentangles-the-threads) Visits Stephen and Marion for tea; provides a comprehensive explanation of his deductions regarding the murder, the forged guinea, and the wax mask. ## Links - HTML: https://www.betterreads.dev/discover/the_d_arblay_mystery_se/characters/dr_thorndyke - Book: https://www.betterreads.dev/discover/the_d_arblay_mystery_se - All characters: https://www.betterreads.dev/discover/the_d_arblay_mystery_se/characters