First-year detective Kathleen Doyle and Chief Inspector Michael Sinclair, Lord Acton, are a most unlikely pair. An Irish redhead of humble beginnings and modest means, Doyle is the antithesis of Acton, the British lord who has established himself as a brilliant but enigmatic figure with a knack for solving London's most high profile homicides. But Acton senses something exceptional beneath Doyle's awkward naiveté and taps her to help him with his investigations. And her spot-on intuition is just what he needs to solve a chilling string of murders. . .When a horse trainer is found dead at a racetrack, Doyle and Acton begin interviewing witnesses and the victim's associates, but the killer continues to strike and they're left with more questions than answers. Their investigation is further muddled by their colleagues at CID Headquarters, whose career-driven jealousies and workplace blunders could jeopardize the case and their nosing into the nature of Doyle and Acton's after hours relationship could lay bare the most classified information of all. . .Perhaps the trainer was the target of a jilted lover on a killing spree. Or maybe the victims were collateral damage in a political coup gone awry. As the murders pile up, Doyle and Acton uncover something far more sadistic than they could have imagined, and now that they know too much, they'll find themselves squarely in the crosshairs of a cold-blooded killer. . .