Alex is in his thirties, a solitary man who has finally found love in the form of his beautiful and vivacious wife, Rachel. When Rachel is brutally murdered one Midsummer Night by the lake in the grounds of their alma mater, Worcester College, Oxford, Alex's life as he knew it vanishes. He returns to Oxford that winter, and through the shroud of his shock and grief, begins to try to piece together the mystery surrounding his wife's death. Playing host to Alex's winter visit is Harry, Rachel's former tutor and trusted mentor, who turns out to have been involved in some way in almost every significant development of their relationship throughout their undergraduate years. In his exploration of Rachel's history, Alex also turns to Evie, Rachel's self-centred and difficult godmother, whose jealousy of her charge has waxed and waned over the years. And then there are her university friends, Anthony and Cissy, who shared with Rachel her love of Browning and a taste for the illicit.