For Lord Anthony Hetheridge, this wet April should be brimming with promise. His wife, Kate, is on bed rest for the final month of her pregnancy, and his friend DI Deepal "Paul" Bhar has just welcomed his firstborn, a darling baby girl. Wellegrave House is beautifully restored, and the Hetheridges are back where they belong, in the heart of Mayfair. But inside Scotland Yard, the institution Tony served with unwavering dedication, something is terribly amiss.

When the lifeless body of Tony's former protégé, DC Amelia Gulls, is discovered in her flat, suspicion quickly falls on her boyfriend, DC Sean Kincaid. Paul urgently enlists Tony's expertise for the investigation, but the deeper they dig, the more questions arise. Before her untimely death, Gulls had been working on three perplexing cold cases: a mistress hurled from her fourth-floor love nest, a university student who drowned in the Thames, and a retired detective's drug-addicted son found dead beneath a tree. As Tony unravels these seemingly unconnected mysteries, he inches closer to a stunning truth-and a perilous confrontation.

Untrue Blue is the electrifying seventh installment in the acclaimed Lord & Lady Hetheridge Mystery Series. Packed with great characters and baffling clues, it will keep you enthralled to the very last word.