London, 1923. In the academic world, there are secrets and rules of its own. At a dinner party, one of the professors’ wives is poisoned by an unknown poison—this audacious crime stirs up the entire university. The main suspect becomes Dr. Maxwell. But Saffron Everly, his student, doesn’t believe in her mentor’s guilt. She decides to conduct her own investigation and find the real criminal. Neither the male professor nor the police take her seriously—after all, she’s a woman. Saffron searches for clues everywhere, and using her deep knowledge of botany, experiments with poisons. She can’t do it alone, and help comes in the form of a research colleague, Alexander—a mysterious young man whom it’s difficult not to be fascinated by. But the more secrets of others Saffron learns, the more dangerous her investigation becomes. Who is the mysterious poisoner, and why did they need this?