A spate of brutal stabbings. An ambitious young detective. A killer hell-bent on revenge.A father is found dead in his posh West London home. Stabbed to death. By somebody who couldn't stop. There are seven or eight puncture wounds.There's no time to relax for recently married DI Rob Miller.Now a second man is found brutally murdered in the same frenzied manner. Do the police have a serial killer on their hands?The investigation leads Rob and his ex-lover Detective Jo Maguire to London's undercover escort industry. It's a risky world to dive into, and Rob's feelings for Jo don't help.They realize that the murderer is leaving a blistering trail of revenge killings - and the violence is escalating.Can Rob and Jo work together to stop the murderer before someone else pays the ultimate price?