# The Ambush explained — The Red Thumbmark > Chapter companion for The Red Thumbmark by R. Austin Freeman. ## What happens Thorndyke and Jervis return from a routine suicide case, discussing the cleverness of an unknown assailant who attempted murder with an air-cane. On their walk home, a shot is fired at them from a window, but Thorndyke secretly retrieves the projectile. Later, in his chambers, he examines a small brass cylinder, hinting at a deeper investigation. ## Themes in this chapter ### Forensic Science and Evidence Thorndyke's meticulous handling and rinsing of the projectile in distilled water, and his plan to test his theory before involving police, exemplifies forensic methodology. ### Deception and Betrayal The attempted murder via air-cane and the secret retrieval of the projectile highlight the hidden, deceptive nature of the attack and Thorndyke's counter-deception. ### Observation and Deduction Thorndyke deduces the shooter's identity and method from minimal clues, and Jervis's careful observation of the projectile underscores the theme. ## Character check-ins ### Dr. John Evelyn Thorndyke Reveals his suspicion of a specific clever scoundrel, retrieves the projectile secretly, and examines it with scientific rigor. ### Dr. Christopher Jervis Accompanies Thorndyke, observes the ambush, and questions Thorndyke's secrecy about the projectile. ### Juliet Gibson Jervis writes her a long explanatory letter about canceling their engagement, showing his growing intimacy and respect. ## Key lines > no marks of violence, and probably the needle-puncture escapes observation at the post mortem, in which case the verdict will be death from heart-failure. The lack of visible wounds means the tiny needle hole might be missed during autopsy, leading to a mistaken verdict of heart failure. _Thorndyke explains the cunning of the poison method._ > I shall maintain an attitude of masterly inactivity and avoid the night air. I will do nothing for now and simply stay indoors at night. _Thorndyke's strategic patience in response to the assassination attempt._ > It is a capital mistake to neglect the old authorities. 'There were strong men before Agamemnon,' and some of them were uncommonly strong, let me tell you. It's a serious error to ignore older experts; great minds existed in the past too. _Thorndyke advises Jervis to study classic forensic texts like Casper and Taylor._ ## Links - HTML: https://www.betterreads.online/discover/the_red_thumbmark_se/chapters/xi-the-ambush - Book: https://www.betterreads.online/discover/the_red_thumbmark_se - All chapters: https://www.betterreads.online/discover/the_red_thumbmark_se/chapters