SOLVED. Fos has returned to Tennessee from the trenches of France. Intrigued with electricity, bioluminescence, and especially x-rays, he believes in science and the future of technology. Marries Opal. [s]

[Cindy]

Any chance it's Evidence of Things Unseen by Marianne Wiggins?

[Barbara]

Yes, yes--thank you!

[Cindy]

You're welcome! I'm so glad that's the one - it sounds very interesting.