I was watching WWRD 32 here in Dayton (now an RTV affiliate), and they were showing a program that involved a place called the Petrovian Embassy. A Google search returned nothing. What is it? It looked pretty late 60s/early 70s.

One of the actors looked like Robert Reed--could it have been Mannix, which ran in that timeframe?

This was an episode of It Takes a Thief. Robert Wagner was the star.

https://www.imdb.com/title/tt0612732/