"Oh, yes, we were on location with Another Man's Poison, which I wrote for Bette Davis"

In this quote, Val Guest is referring to his experience working on the film "Another Man's Poison" with the legendary actress Bette Davis. He points out that he wrote the movie particularly for Davis, suggesting that he had her in mind while creating the story and characters. The phrase "on location" recommends that they were recording in a specific, real-life setting rather than a studio. This could add to the credibility and realism of the film. In general, Guest's statement highlights the partnership in between himself and Davis, and the importance of her role in bringing his vision to life on the big screen.