4 stars. Book four in the series and it is even better than the first three. The characters have developed and just leap off the page. The plot is tight and has enough twists and turns to keep you guessing. In this one, the ladies have to confront secrets from the past that unfortunately end in murder. Very engrossing with spies, spies, danger, and more spies. I liked this one very much and will be continuing with the series. Book five is due out July 2023.