I'm not at my computer where I can pull up the file and listen, otherwise I'd tell you the actor's names. This episode's central characters are:

1. A kindly neighbor, a bit the shade tree inventor, who's played by the man who played clockmaker Ethan Vigil in that top-of-the-art-form RMT episode "Time and again". This actor always sounded like a kindly old uncle.

2. and 3. A man and his wife, who are both (with the wife moreso) quietly distressed at the recent stillbirth or miscarriage of their twin boys.

The neighbor would love to be able to help his friends overcome their grief. During a visit to his house, he tells the husband about a project he's been working on that involves photographic film and a "ruby lamp" in a darkroom. This project actually enables him to capture, on film, thought images that people have in their subconscious. As the episode goes, he and the couple seem to think that by doing this there will be a therapeutic effect for them.

A touching episode. 