How do you stop a serial killer who has been dead for 100 years? In the 21st adventure thriller by bestselling authors Preston & Child, featuring FBI Special Agent Aloisius Pendergast, the story delves deep into the past – quite literally! On the surface, Constance Green appears to be a smart and beautiful woman in her mid-twenties – but the ward of Special Agent Pendergast is actually 140 years old! At the end of the 19th century, Pendergast's insane ancestor, the serial killer Dr. Enoch Leng, not only murdered Constance's siblings but also conducted dark experiments on the young woman that have prevented her from aging ever since. When Constance discovers a way to travel back in time and confront Leng once more, she seizes the opportunity immediately. However, her daring plan could lead her straight into a trap. In present-day New York, Agent Pendergast must do everything in his power to save Constance from her past... With their gripping, action-packed thrillers featuring the cult investigator Aloisius Pendergast, Douglas Preston and Lincoln Child regularly land on bestseller lists in the USA.