This is no simple plot. John and Kate find Yemen to be quite complicated and very dangerous. Nearly every male carries an AK-47 and the women adhere to the strict Muslim tradition of not being heard or seen.. This provides some complications for Kate, but they are dealt with the best she is able. Many of the embassy staff who venture outside the protection of the embassy compound wear Kevlar vests and carry weapons. Yemen is no ordinary country. John continues to wise crack his way through the course of the book and provides much needed comic relief. If you have read any of the previous books John and Kate have appeared in such as The Lion you get the idea. I read/listened to the book on the Audible version narrated by Scott Brick. He does a great John Corey as well as the other characters. I think they are portrayed more realistically than may be accomplished in the printed version. Of course, this is a matter of preference for the reader and all of us have our own preferences
There is plenty of action from the arrival of John and Kate at the airport in Sana'a to the finale. One of the characters is Buck who works in intelligence for the State Department. Buck has done his research on Yemen, been there before, and provides a running travelogue that results in many unspoken thoughts and spoken words from the irreverent John Corey. John is a wise guy, but one you want on your team when going after the bad guys.
Here is a summary of the plot from Amazon Books: