The greatest spectacle London has ever seen is being erected in Hyde Park and, among the crowd watching, two people meet. For Iris, an aspiring artist of unique beauty, it is the encounter of a moment—forgotten seconds later—but for Silas, a curiosity collector enchanted by the strange and beautiful, the meeting marks a new beginning. When Iris is asked to model for Pre-Raphaelite artist Louis Frost, she agrees on the condition that he will also teach her to paint, and suddenly her world expands beyond anything she ever dreamed of. But she has no idea that evil stalks her. Silas, it seems, has thought of only one thing since that chance meeting, and his obsession is darkening by the day...