Guest star June Allison was married to Dick Powell. The Harts "live" in their house.
Robert Davi and Joe Pantoliano also starred together in the movie "The Goonies."
The Hart's "house" was owned by celebrity couple Dick Powell & guest star June Allyson. Robert Wagner was a friend of Dick's and visited their Amber Hills Estate often. He loved it so much, he suggested they use it for "Hart to Hart."