Mary Westmacott will not be one of Agatha Christie’s detectives! Rather, she's a pseudonym for Agatha Christie herself. Christie preferred the freedom to jot down non-secret novels which could be judged on their own advantage, free from comparisons with her detective novels. 「うろ覚え」を「うる覚え」と書く人が結構多いような気がしますが、 どういういきさつで「うる覚え」と間違えて覚える... https://holdengovck.rimmablog.com/35293443/how-much-you-need-to-expect-you-ll-pay-for-a-good-oxygen-chamber-stoke-on-trent