The Doll’s House by Evelyn Anthony was first published in 1992. I read a lot of Evelyn Anthony’s books back in the 1970s, those ones seemed to mainly feature Germany and Nazis if I’m recalling correctly, but The Doll’s House begins in 1990s London where Rosa Bennet works for the Foreign Office, she’s quite a high-flyer and is focused on her career, much to the chagrin of her husband who wants to start a family. Inevitably the marriage collapses.
Rosa is expecting to be sent to Brussels by the Foreign Office, it looks like she’ll eventually become a diplomat, but before that she’s sent undercover on a mission to a posh hotel. The running of the hotel has recently been taken over by a man who had been working as a spy for Britain but after the fall of the Berlin Wall and the end of the Cold War he had been pensioned off at the age of just 52, with his espionage skills no longer needed. His old bosses had felt it necessary to check out that he was indeed settling down to ordinary life in the hotel industry.
Rosa gets dragged into the violence of Middle Eastern politics, and an unexpected romance.
This is quite a suspenseful thriller, but I preferred the World War 2 related plots of her earlier books.