This article outlines some of what you remember (though not, afaict, anything about getting Nazis interested in his medical 'experiments') https://www.tabletmag

This article outlines some of what you remember (though not, afaict, anything about getting Nazis interested in his medical 'experiments') https://www.tabletmag.com/sections/arts-letters/articles/viktor-frankl https://www.tabletmag.com/sections/arts-letters/articles/vik... Per the article, he spent years in concentration camps, but only a few days at Auschwitz.