"The Wire in the Blood" is a psychological thriller novel by author Val McDermid. It features clinical psychologist Dr. Tony Hill, who assists the police in solving complex murder cases. The story delves into the mind of a serial killer, exploring themes of obsession and the darker aspects of human nature. In this gripping narrative, Dr. Hill's expertise in criminal psychology is put to the test as he tries to understand the motivations behind the crimes. The novel is part of the Tony Hill and Carol Jordan series, which highlights the collaboration between Hill and detective Carol Jordan in their pursuit of justice.