Man, trying to summarize 'The Lost Apothecary' is tough without spoiling the best bits, but here's my go. It's essentially two stories woven together. In present-day London, Caroline is reeling from a personal crisis and finds an old apothecary vial while 'mudlarking' in the Thames. Her curiosity about it becomes an obsession, a distraction from her own life. Meanwhile, in 1791, we follow Nella, who runs a secret apothecary shop for women—but her potions aren't for healing. They're for poisoning the oppressive men in her clients' lives. The link between the two eras is Eliza, a young girl sent to Nella on a dark errand who gets accidentally entangled in a murder.
What I loved was how the past storyline felt so urgent and tense, while Caroline's modern detective work had this melancholic, searching quality. It's less a whodunit and more a 'why-dunit' and 'how-do-these-women's-lives-echo.' The plot really hinges on the consequences of one act of vengeance in 1791 rippling forward, and how Caroline's investigation helps her confront her own choices. The ending ties the threads together in a way that felt earned, not just neat.