The book was a page Turner and I was not able to successfully guess the spy.
Set during WWII, the writing style is much akin to Agatha Christie’s Tommy and Tuppence mysteries. It keeps you engaged with twists and turns, gives enough personal details about the main characters to support the story without rambling on. I didn’t find any plot holes, which is also a plus.
A quick read and part of a series, the books are great if you’re looking for a story you can easily follow.