In the novel Five Little Pigs, Quentin Fogg, KC was Junior for the Prosecution in the original trial against Caroline Crale. He assisted Humphrey Rudolph. As Rudolph had died by the time of the events in the novel, Poirot call on Fogg to seek his impressions of the trial.
Fogg gave Poirot a detailed account of the trial, and noted that despite the best efforts of the formidable defence counsel Montague Depleach, Caroline Crayle never stood a chance. Nonetheless the trial, although more than fifteen years ago, left a deep impression on Fogg and he remembered it clearly although he could not exactly say why. Caroline Crayle was a remarkable woman whom Fogg could never forget. He was certain that she loved the man she killed. Poirot thought Fogg saw a certain "romance" in the trial. "She had the quality of it," Fogg said. "[H]alf the time, she wasn't there. She'd gone away somewhere ... just left her body there, quiescent, attentive, with the littlepolite smile on her lips. She was all half tones, you know, lights and shades. And yet, with it all, she was more alive than (Elsa Greer)". Fogg dmired Caroline Crale because she didn't fight, "because she retreated into her world of half lights and shadows". To Fogg she was never defeated because she never gave battle.'
Poirot observed that Fogg was unlike Montagu Depleach. Unlike Depleach who excelled at courtroom drama, Fogg was lacking in personality. His questions were quiet and unemotional but steadily persistent. "If Depleach was like a rapier, Fogg was like an auger. He bored steadily". Fogg may never reach spectacular fame but he usually won his cases.