Alex Gerlis 's Books
A very well recieved series by Alex Gerlis are the books, featuring tropes. The most popular books are Sea of Spies, End of Spies, The Berlin Spies, Ring of Spies, The Swiss Spy, Vienna Spies, The Best of Our Spies, which was published in 2022.
Sea of Spies
End of Spies
The Berlin Spies
Ring of Spies
The Swiss Spy
Vienna Spies
The Best of Our Spies