In this thrilling story of crime and corruption from the world’s #1 bestselling author, three detectives keep their identities secret, and NYPD’s Det. Helene Grey is on a mission to unmask them—no matter who gets killed along the way.  ​ In New York City, three intriguing, smart, and stylish private investigators open Holmes, Marple & Poe Investigations. Who are these detectives with famous names and mysterious, untraceable pasts? Brendan Holmes—The Brain: Identifies suspects via deduction and logic. Margaret Marple—The Eyes: Possesses powers of observation too often underestimated. Auguste Poe—The Muscle: Chases down every lead no matter how dangerous or dark. The agency’s daring methodology and headline-making solves attract the attention of NYPD Detective Helene Grey. Her solo investigation into her three unknowable competitors rivals the best mysteries of Sir Arthur Conan-Doyle, Agatha Christie, and Edgar Allan Poe.