Mission To Paris by Alan Furst

In 1938 Paris, an Austrian-born Hollywood star arrives to shoot a film and is drawn into a perilous web of espionage as Nazi agents seek to exploit his fame for propaganda while French and American contacts nudge him toward resistance. Navigating studios, salons, and shadowed boulevards, he undertakes risky missions that test his courage and loyalties as Europe edges toward war.

Purchase from Bookshop.org