"The Weakness in the Armor" is a fascinating psychological detective story by the outstanding English writer Marie Belloc Lowndes. In this book, the author examines psychology and some aspects of interpersonal relations. The main character, Clotilde Masterman, has an incredible talent for guessing people's thoughts and feelings, which makes her an incomparable detective. In this book, the reader will encounter confusing storylines, unpredictable turns of events and numerous mysteries that will have to be solved together with the main character. "The Weak Spot in the Armor" is not only an exciting detective novel, but also an interesting story about human relationships and trust. Readers will feel like co-participants in the investigation from the environment of sophisticated English society, as well as participants in interesting psychological experiments.