Dark Mirror

When Marion Summers - red-haired, beautiful and mysterious - collapses and dies in the rarefied surrounds of the London Library, DI Kathy Kolla and DCI David Brock are sent to head the investigation.  Kathy finds a reluctant kinship with the fiesty Marion, who had, like Kathy, left a difficult home life when young and struck out to London for independence.

Marion's research on the intriguing, adulterous circle of artists, wives, lovers and muses around Victorian artist Dante Gabriel Rossetti seems irrelevant, until the use of arsenic arises.  As Brock and Kolla get closer to the truth, another victim dies an excruciating death in a library, and it looks like a serial poisoner is on the loose.