by Denise Mina.

Forensic scientist Claudia O’Sheill is an acclaimed blood spatter expert. Her evidence helped convict a killer in one of the most high-profile recent murder cases in London.

But a speech she’s about to give will undermine that conviction and destroy her career.

As this story unfolds in two timelines, past and present, the author delves into her characters’ motives and delivers twist after twist to bring us a suspenseful and unputdownable novel